June 23, 2022
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Some emergency matters will happen in the night boating, maintaining the lighting effect and persistence is very important. So what are the functional requirements for marine lighting for night boating?
1. The waterproof, anti-corrosion and explosion-proof performance
The marine lighting has waterproof, anti-corrosion and explosion-proof performance, ensuring reliability and safety in the night boating
2. Lighting persistence
Lighting persistence of the lamp is important, due to the suddenness and uncertainty of the work The length of the working lighting is unable to accurately discriminate. Only if the lighting time is enough long to deal with the need for emergency lighting.
3.Multi-purpose and multi-function
The space is relatively narrow at the operation platform. The high-efficiency multi-function marine lighting is the best choice.
Why Should Choose Marine Searchlight For Night Boating
At present, there is a short life of navigation light, short irradiation distance, small light range, single traditional control method, which extremely affect the safety of night boating.
What is a marine searchlight
The marine searchlight is a device, with a strong light source and a concave mirror which can concentrate the lighting and project in a specific direction, widely used for long-distance lighting and search. It can be concentrated at a small stereoscopic angle with a mirror or lens. The search light is waterproof with good heat dissipation, small volume, lightweight, easy installation and maintenance, safe and reliable application.
Outstanding advantages of a marine searchlight for night boating
1. Suitable for both distance and close lighting
In the long-distance, the powerful xenon lamp searchlight has an effective range of 2000m, which can illuminate the forward route for night navigation, playing a warning effect on the passing ships. Nearby, high-brightness and wide-angle marine LED searchlight provides a good lighting environment for working on board.
2. Intelligent control
Intelligent search lights are divided into two specifications: wireless and wired, and suitable control methods can be selected according to the ship's own installation characteristics. The wireless remote control can be carried with you and can be controlled anywhere on the boat, which is convenient for controlling the irradiation at any time and providing safety and convenience for night boating.
The irradiation direction can be adjusted at will through the wireless remote control according to actual needs. Compared to the traditional single control method, intelligent control can save more human resources.
3. Multi-function
The ship searchlight has a variety of cruise modes for choosing from to meet the different environmental needs of navigation. It also has features such as preset positions, guard positions, automatic start and stop, radar alarm linkage, etc, to meet the diverse marine needs, and can also maximize ensure the safety of night boating.
Marine searchlight is perfect for application in the night boating, lightweight, waterproof, with small volume and strong heat dissipation.
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June 23, 2022
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Marine searchlight makes people can better explore new fields in night boating. The bright illuminates, can ensure safe navigation and promote the development of navigation.
The Factors To Consider For Selecting Best Marine Searchlight
1. Lighting requirements
High brightness
Excellent concentration effect, used as a marine spotlight
Strong penetration
2. Service Life/Stability
Long service life
High stability
Can switch on and normal use under ultra-low temperature and high-temperature.
3.Functions
Manual/automatic control
Multiple working modes
Adjustable high and low speed
Automatic second start
4.Installation and maintenance
Simple and fast installation
Long service life and maintenance-free.
Various installation methods such as on horizontal and vertical walls, vertical poles, and horizontal poles.
5. Response speed
Lighting up instantly, no preheating is required.
Can be hot-started, that is, it can be turned on repeatedly after it is closed, without cooling.
Can work continuously for 24 hours without shutting down and cooling.
Accurate positioning, no need to repeat adjustment
6. Weight/transport
Small volume, light weight, easy to transport, reducing the costs of transportation and installation.
Perfect packaging, which can effectively avoid the damage of vibration and extrusion caused by sea transportation, loading and unloading.
Professional Marine Searchlight Manufacturer - YSmarines
YSmarines is one of the most professional and leading marine searchlight manufacturers in China, which can provide high-performance products. The boat seachlight manufactured by YSmarines marine searchlight adopts aluminum alloy profiles and electrostatic spraying processes for surface treatment, with lightweight, strong heat dissipation performance, excellent waterproof, widely used for searching, night navigation, life-saving, warning, etc.
Why should choose YSmarines marine searchlight
1. The lamp shell of the search light is made of cast aluminum, which is strong and light.
2. It has an extremely high resistance to strong collisions, shock resistance and impact resistance.
3. High-strength tempered glass with high-temperature resistance.
4. It can be used as a ship spotlight with an excellent concentrating effect and the effective range is up to 2000m.
5.It has a xenon light source, high brightness with a brightness of up to 15000lm.
6.Fully sealed process design.
7. It can control the body to rotate for 350°horizontally and bend for 30°, with flexible and convenient operation.
The article introduces some useful tips to select ideal marine search light and YSmarines is one of the best choices for superior quality searchlight and spotlight, with advanced technology and the most competitive prices. YSmarines will strive to continue researching and developing marine lighting products to meet the development of navigation and will always shine brightly for ships
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June 23, 2022
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Fairlead refers to the general name of the various devices which guide, limit, or change the direction and position of the cable without damaging the cable. Marine roller fairlead is one of the most widely used fairleads and is an important part of the marine mooring device.
Important Marine Mooring Device - Roller Fairlead
The Constitute Of Roller Fairlead
The roller fairlead is consisting of vertical rollers and horizontal rollers, which are replaced with a roller cable and have added a horizontal roller. It can direct cables from all directions can be guided. In addition to commonly used four-rolled fairlead, there are types of three rollers, five rollers, six rollers, seven rollers and nine rollers.
The warping roller fairlead is made of several independent rollers, closed and open, according to the number of separate rollers, the types of double rollers, three rollers, and four rollers are widely used. It can simultaneously derive the root cable, mostly used in large and medium-sized ships.
Important Role For Marine Mooring Device
The roller fairlead is suitable for the mooring of the engineering ship and the strait waterway with multi-directional conductors. There are also a relatively large roller fairlead that allows the ambulance person to transport the wounded person from here when there is an accident. The function of the roller fairlead is related to the normal navigation of the ship and the efficiency of the treatment personnel, even related to the life safety of the ship.
Working Principle Of Roller Fairlead
One basic working cycle of the roller fairlead is divided into five processes including intake, compression, combustion, expansion, exhaust.
When the roller works, the piston is moved back and forth in the cylinder, and this motion is converted to the crankshaft rotation motion by the crank link mechanism. The top of the piston movement in the cylinder is called a dead center, and the lowest position of the cylinder achieved by the movement is referred to as a stopping point. The piston from the dead point to the stop point becomes a stroke. Every turn in the crankshaft, the piston has two strokes.
The working system of the fairlead mainly includes roller cooling, roller lubrication, and fuel system.
1.Cooling System
The system is divided into freshwater cooling systems, seawater cooling systems, and central cooling systems. In order to spread this heat, the cooling liquid is used to continuously flow through the thermal member.
2. Lubrication System
The system includes lubrication, cooling, cleaning, sealing, corrosion, reducing noise.
3. Fuel system
The system mainly includes fuel installation, storage, dismissal, purification, heat, etc. The heating equipment to maintain heavy oil in the oil tank for maintaining the fluidity of heavy oil. Heavy oil should be purified and atomized by purification and atomization before transporting the roller fairlead high-pressure oil pump.
For more professional knowledge about roller fairlead, please visit the page of what is the roller fairlead.
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June 23, 2022
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Roller fairlead plays an important role in mooring devices. Here we'll introduce some useful tips of the roller fairlead including installation, maintenance and how to find the best manufacturer & supplier.
Installation Precautions For Roller Fairlead
For the installation of the roller fairlead, what should be paid attention to?
1.Safety
It is necessary to pay attention to safety, although the device is not flammable, the safety environmental requirements should meet.
2. Environment
It is necessary to pay attention to avoiding environmental moisture and ensure that the environment has been in a dry state, avoiding rust in the process of installation.
3. Packaging
In the packaging requirements, it is to ensure excellent functions, extending the service life.
Maintenance Of Roller Fairlead
The roller fairlead is always exposed. If it is not well maintained in use, it will increase the chance of damage in use. The maintenance work is needed. So, how does the maintenance work do? Here are some instructions.
Anti-rust Work
For roller fairlead, made with stainless steel materials, people should apply a certain anti-rust oil on its surface before use, and reduce the rust chance in use through anti-rust oil, to ensure a good appearance.
Checking Work
Each component of roller fairlead is needed to be checked for daily use. For any small problem in the check, it is necessary to be paid attention and solve it, which will reduce the chances of damaging for ensuring the long-term service life.
Preventing Deformation
The deformation will affect the use. If the deformation is serious, it will directly lead to the occurrence of fracture. So in the applications,can prevent it from deforming through the control of the pressure.
Daily maintenance can ensure the normal use of roller fairlead, guaranteeing the good effect.
How To Select The Best Roller Fairlead Manufacturer
To ensure good performance, how to choose the high-quality products from the best roller fairlead manufacturer and what factors should be considered are important?
1. Appearance
The material quality, structure, processing level of a roller fairlead, can be reflected from the appearance.
In terms of the reliability of the roller fairlead, it is very important that there are no defects in the appearance, which will affect the intensity. Because of the roller fairlead in use, it is necessary to withstand the huge external force of the ship and it is necessary to ensure that the structure of the roller fairlead is stable, not damaged by the external force, with high requirements in strength.
A good roller fairlead manufacturer should use high-intensity materials and does a good job in processing and surface treatment, ensuring that there is no strength defect in the surface. Otherwise, even if there is no problem with the material intensity, it will also cause problems in the strength due to the surface defect, which will affect the normal functionality use.
The best manufacturer should adopt excellent quality material with the advanced process, then the color of the appearance will be uniform and bright.
2.Specifications
To select a quality roller fairlead, it is necessary to pay attention to the requirements on the specifications, the requirements on the specifications, which is required to transmit the cable on the specifications, because the cable has differences in size, length. The device that can be stored and used is also different from the specifications.
The best roller fairlead supplier should have different specifications to meet the requirements of the installation.
3. Environmental Restriction
Because of the different environments, there is a certain limit on the material of roller fairlead, especially for the marine equipment and the wear of metal device is very large. The requirements of corrosion resistance for the roller fairlead should be considered.
The supplier should adopt excellent corrosion resistance materials for superb roller fairlead.
4.Price
The price always is an important factor for choosing the best-value manufacturer. The most competitive prices with quality products can be a great advantage.
5. Craftsmanship
An excellent manufacturer & supplier should have advanced craftsmanship and strict quality requirements, which should meet the needs of effect and performance.
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June 23, 2022
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Marine mooring is a ship state, including the ties of docks, floating cylinders, or other mooring boats, mooring line required, relying on cable to fix the boat. The mooring bollard refers to the bollard fixed on the deck or the pier to tie the cable. It is generally made through metal casting or welding. Because it is very stressed when used, the base is very firm. In order to prevent the cable from slipping, the bollard is generally covered with a bollard cap which is slightly larger than the pile. The bollards are usually mounted on the front of the bow, the stern of the ship.
The mooring bollard has a specific shape. After thriving into the water, it can quickly engage the bottom to generate the grasping force. The vessel or other floating system is left to the special appliance of the designated water via anchor chain or anchor cable. A first anchor is installed on the outside of the ship's left and right bulldone, another anchor of the same specification is placed at the deck for spare use.
There are various types of marine bollards, including curved dock bollard, cruciform bollard, double cruciform bollard, double bitt mooring bollard, kidney-shaped bollard, staghorn bollard also known as twin horn dock bollard, T head bollard.
Arrangement Requirements Of Mooring Bollard
The piles which provide cable assistance for dragging, are arranged in the front and stern and the direction should be consistent with the cable dragging direction. The chock and the fairlead should be maintained at a certain distance, which should not be less than 6 times the diameter of the mooring bollard for a large vessel and not less than 10 times the diameter for a small ship, generally within the range of 1.5 ~ 2.5m, to provide enough deck for mooring assistance rope, no obstacle allowed within 1m around the bollard, and the distance between the outer edge of the bollard and the gunnel should not be less than 1.5 times the diameter of the mooring bollard.
Maintenance Requirements For Mooring Bollard
The carrying capacity of the mooring bollard is very huge and its working environment is above the sea with strong corrosion, which can greatly affect the service life of the marine bollard. In order to extend the service life and reduce the various damages, a variety of maintenance work should be done for daily use.
Cleaning work
As it is generally applied in the ship above the sea, some sea shellies and microorganisms are parasitic, so it needs to clean the mooring bollard and pay attention to regular cleaning of these microorganisms.
Reinforcement work
In daily use, the mooring bollard will be pulled by the cable, resulting in under the pulling force in a long time and the loose possibility is very large. It is necessary to pay attention to the reinforcement requirements and the regular inspection for the tightness, guaranteeing stability.
What Should Be Paid Attention To For The Daily Use Of Mooring Bollard Due to the important function, the following problems should be paid attention to, ensuring the stable and reliable performance of the mooring bollard.
1.Operation correctly
The mooring bollard is easily damaged if there’s any problem exists during the operation, and the chance of failure will increase, so it is required to pay attention to the operation correctly, avoiding any error.
2. Do a good job for inspection
Even with superior quality, it is also possibly damaged during the use under the influence of external factors, which requires that during the application, pay attention to the inspection, avoiding the problems which will affect the normal use.
3.Solve the problem timely
In the daily use, it is necessary to inspect the mooring bollard regularly and solve the discovered problems timely.
For more introduction, you can visit the article page of concerning about the mooring bollard.
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June 23, 2022
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Mooring bollard has high performance for the marine mooring purpose, which is more and more welcomed by the customers. In order to purchase the excellent quality marine bollard, what should be considered for the manufacturing? Here, introduce some tips to select a good mooring bollard manufacturer.
1. Shape requirements
It is necessary to pay attention to the shape and the shape & style should satisfy the rationality and the performance, avoiding quality problems.
2.Specifications
When manufacturers a mooring bollard, the specifications should be reasonable, reducing the quality problems, guaranteeing excellent performance.
3.Guaranteeing Performance
The function and performance are important for a manufacturer. The manufacturing should ensure high performance and the materials should be superior and rational.
4.Price
The price always is an important factor to select a manufacturer. A good mooring bollard manufacturer or supplier should provide the best-value products.
Professional mooring bollard manufacturer - YSmarines
YSmarines, which is a professional and leading manufacturer of marine and offshore equipment such as mooring equipment, marine lighting, marine anchor, fairlead, life raft, etc, providing mooring bollards adopting materials of cast aluminum or stainless steel 316L with sprayed or polished surface, beautiful safe and reliable, which can adapt to the harsh ocean environment, widely used to various yacht terminals and ships, the pulling force selection ranges from 1.5 tons to 10 tons, the most competitive prices and reliable quality guaranteed.
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June 23, 2022
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When the inflatable life raft is used, the raft and the storage cartridge can be thrown directly into the water. The life raft can be automatically inflated. When the ship sank too fast under the water, it is too late to throw it into the water surface. The hydrostatic pressure release on the raft will automatically remove and the emergency inflatable life raft will be released, floated automatically.
The detailed steps as follows
1.Take the hook opening on the hydrostatic pressure release and launch the small ring, making the chain hook fall, or rotating the manual release device, and the raft will slide to the sea.
2.When the height is less than 11m from the water surface, or when the raft is thrown into the water, it is necessary to continue to pull out the first cable and open the valve of the inflatable cylinder, so that the raft is floated above the seawater.
3.If there is an overturned state, it should be centered. The person should wear a life jacket, and climb the bottom of the raft. When standing in the steel bottle, the hands pull the bottom, squatting and hypokinesis.
The Installation Of Inflatable Life Raft
When the inflatable life raft is folded, it is stored in the glass steel storage cartridge. Generally, it is generally arranged on the two-port boards. When installing, the raft is welded to the ship deck, ensuring that the storage cartridge is in the hierarchical position, and the fix is with the kundy which is connected to the raft and the manual detachment assembly. The assembly components are connected to the hydrostatic pressure release.
1. The bowline that is taken from the life-saving raft cylinder, is firmly connected to the hydrostatic pressure release ring, and there is an easy-to-break rope on the connecting ring, and the other end of the easy-to-break rope should be connected in the hydrostatic pressure release.
2. It is not allowed to pull the bowline from the storage cartridge.
What Should Be Paid Attention To The Use Of Inflatable Life Raft
1. When the life raft is drifting too urgently, the sea anchor can be put into water and reduce the rafting speed.
2. in order to avoid the wind and waves, the enter-exit door should be put down, and the duty for looking out will be strengthened through the hoping window on the raft hanger.
3. If there is water in the raft, take out the water scoop from the repair bag and drain it with the absorbent sponge.
4.In the night, using the flashlight to emit a Mousta signal, during the day, the mirror is transmitted by the sunlight.
5. When it is raining, utilize the drinking water bottle and the water pipe and deposit the rainwater to prepare for drinking.
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March 15, 2022
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YSmarines can provide you the customized marine chocks as your drawing, high quality and the most reliable prices guaranteed, the certificates of CCS, DNV, ABS, BV, LR, etc guaranteed.
Applications
Small boats;
Sea-going vessels;
Tugboats;
Barges:
Other ships or boats
Packages
Packaged by wooden pallets;
Packaged by steel pallets;
Packaged within containers directly.
Triangle Type Towing Chock
Features
1.High SWL for mooring and towing purpose both;
2.Wide application scope or usage;
3.Smooth surface treatment for better protection of the rope lines;
4.Customized service supported.
NS2590 Deck Mounted Mooring Chock
Features
1.Without stiffeners;
2.Weldable base for choice;
3.Smooth surface;
4.Widely used for vessels.
NS2589 Bulwark Mounted Mooring Chock
Features
1.Support the customized service;
2.Anti-corrosion protective surface treatment;
3.Simple structure design;
4.Advanced production technics.
JIS F 2030-1978 Single Point Mooring Pipe
Features
1.Paint primed or galvanized surface treatment;
2.Closed mooring chock shape;
3.Class Approved;
4.Strict quality control.
JIS F 2017-1982 Panama Chock
JIS F 2017-1982 Deck Mounted Panama Chock (Type AC)
Material: Cast steel
Weight: 293kg to 395kg
Finishing: the Panama chocks shall be coated externally with an anti-corrosion protective finish.
Installation site: on the deck
JIS F 2017 Bulwark Mounted Panama Chock (Type BC)
Material: Cast steel
Weight: 276kg to 472kg
Finishing: the Panama chocks shall be coated externally with an anti-corrosion protective finish.
Installation site: on the bulwark
JIS F 2007-1976 Mooring Pipe
JIS F 2007-1976 Oval Shape Mooring Pipe (Type A)
Material: cast steel
Standard: JIS F 2007-1976
Size: 150/200/250/300/350/400/450/500
Finishing: one layer of shop primer after sandblasting 2.5
JIS F 2007-1976 Circular Shape Mooring Pipe (Type B)
Material: cast steel
Standard: JIS F 2007-1976
Size: 150/200/250/300
Finishing: one layer of shop primer after sand blasting 2.5
Installation site: on the bulwark
JIS F 2006-1976 Open Chock
JIS F 2006 Cast Steel Open Chock (SC Type)
Material: Cast steel
Weight: 10.7kg to 98kg
Finishing: the open chocks shall be coated externally with an anti-corrosion protective finish.
Installation site: on the deck
JIS F 2006 Cast Iron Open Chock (FC Type)
Material: Cast iron
Weight: 11.5kg to 130kg
Finishing: the open chocks shall be coated externally with an anti-corrosion protective finish.
Installation site: on the deck
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March 15, 2022
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YSmarines is a professional marine mooring chock manufacturer, providing the products with the certificate of DNV-GL, BV, LRS, ABS, RINA, etc, the most competitive price guaranteed.
Applications
Tugboats
Bulk carriers
Containers
Oil tankers
LNG tankers
Other ships or boats
JIS F 2005-1975 Closed Chock
Features
High quality marine used cast steel;
Finishing: the closed chocks shall be coated externally with an anti-corrosion protective finish;
Various kinds of the foundation for easy installation on the deck.
ISO13729 Closed Chock
ISO13729 Deck Mounted Closed Chock (Type A)
Material: Cast steel
SWL: 226KN to 1383KN
Finishing: the ISO13729 closed chocks shall be coated externally with an anti-corrosion protective finish.
Installation site: on the deck
ISO13729 Bulwark Mounted Closed Chock (Type B)
Material: Cast steel
SWL: 226KN to 1383KN
Finishing: the mooring chocks shall be coated externally with an anti-corrosion protective finish.
Installation site: on the bulwark
ISO13728 Panama Chock
ISO13728 Deck Mounted Panama Chock (Type A)
Material: Cast steel
SWL: 471KN to 687KN
Finishing: the mooring chocks shall be coated externally with an anti-corrosion protective finish.
Installation site: on the deck
ISO13728 Bulwark Mounted Panama Chock (Type B)
Material: Cast steel
SWL: 687KN to 775KN
Finishing: the mooring chocks shall be coated externally with an anti-corrosion protective finish.
Installation site: on the bulwark
ISO13713 Mooring Chock
ISO13713 Deck Mounted Mooring Chock (Type A)
Material: Cast steel
SWL: 353KN to 1373KN
Finishing: the mooring chocks shall be coated externally with an anti-corrosion protective finish.
Installation site: on the deck
ISO13713 Bulwark Mounted Mooring Chock (Type B)
Material: Cast steel
SWL: 353KN to 1373KN
Finishing: the mooring chocks shall be coated externally with an anti-corrosion protective finish.
Installation site: on the bulwark
GOST25056 Deck Mounted Mooring Chock
Features
Qualified material with normalized heat treatment;
High SWL for mooring and towing;
Wide range of application;
RMRS class approved;
Strict surface treatment requirement.
DIN81915 Panama Chock
DIN81915 Bulwark Mounted Chock (Type A)
SWL: 20KN to 320KN
Finishing: one layer of shop primer after sandblasting 2.5
Installation site: on the bulwark
DIN81915 Deck Mounted Panama Chock (Type C )
SWL: 20KN to 320KN
Finishing: one layer of shop primer after sandblasting 2.5
Installation site: on the deck
For more professional & detailed product information, please visit the page of ysmarines.com.
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March 15, 2022
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YSmarines is a professional roller fairlead supplier with excellent quality, the most reliable price and fast delivery guaranteed.
Features
1.Flexible bearing or axle.
2.Smooth surface coated externally with an anti-corrosion protective finish;
3.Anti-seawater material.
4.Customized weldable Pedestal
5.Seawater resistant bronze slide bearing with grease lubrication.
6.Welded structure
NS2585 Warping Roller Fairlead
NS2585 warping roller is the same as the GB/T 10105-88 fairlead. It is cast by the finest quality marine mild carbon steel for added durability. All surfaces in contact with the ropes shall be free from surface roughness or irregularities likely to cause damage to the ropes by abrasion. It has a high breaking load of a tightwire. The compact design, precision machined smooth surface and easily removable shafts ensure the good wear and corrosion resistance of the fairlead. It is used to lead the direction of mooring ropes for marine ships
ISO13767 Shipside Roller Fairlead
The shipside roller is made in accordance with the standard of ISO 13767. The safe working load (SWL) intended for the use of the roller fairlead shall be noted in the towing and mooring plan available onboard for the guidance of the shipmaster as specified in MSC/Circ.1175. There are two types of fairleads as the construction, which include 2-roller type and 3-roller type.
ISO13755 Warping Roller Fairlead
The foundation of the warping roller shall be determined by the manufacturer in accordance with the standard of ISO13755. The roller is made from steel casting having a yield point of not less than 205N/mm2 or steel plates having a yield point of not less than 235 N/mm2 and the Axl is made from weldable steel casting having a yield point of not less than 350N/mm2 or equivalent.
Vertical Guide Sheave
The vertical sheave is a type of mooring fittings to guide the mooring rope vertically on the deck. The fairlead is built to withstand breaking strength of indicated rope at 90-degree sheave wrap on sheaves. It is made of cast steel with hardened rope groove for longer life. There can be one sheave or two sheaves together. It is a removable guide roller with an epoxy primer coating. It is a special sheave for high-performance synthetic ropes.
JIS F 2026 Roller Fairlead
The roller fairlead is manufactured strictly according to the Japanese Standard JIS F 2026-1980. It is also known as universal fairlead with horizontal rollers and vertical rollers. It is made of stainless steel. Its surface is polished and galvanized which has high corrosion-resistance. It is usually located on the deck end or in the bulwark. It can perfectly guide the direction of ropes and protect them.
JIS F 2014 Warping Roller Fairlead
The warping roller is manufactured according to the JIS F 2014 -1987 standard. It is also known as CB58-83 fairlead. It is used as a shipside roller fairlead and is to change the direction of the ropes. All surfaces of the fairlead, including welding, shall be free from any visible flaws or imperfections. The roller diameter is from100mm to 450mm, suitable for rope diameter from 40mm to 80mm.
ISO13776 Pedestal Roller Fairlead
The pedestal fairlead is manufactured in accordance with the ISO 13776 standard. The actual SWL of the fairlead on board shall be determined by considering the under deck reinforcement and shall not be over the SWL indicated in this International Standard. Depending on the rollers on the top, the fairleads shall be classified as two types including the cylindrical pedestal and conical pedestal. Besides those, other options such as square or customized pedestals according to the requirement of clients are available.
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March 15, 2022
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YSmarines is a professional roller fairlead manufacturer, customized design, certificated with CCS, ABS, BV, LR, etc, the most competitive price and fast delivery guaranteed.
ISO13742 Roller Fairlead Without Upper Roller
The roller fairlead is made according to ISO 13742 standard without upper roller and it is a universal fairlead consists of horizontal and vertical universal rollers to increase stiffness and fairlead strength, guiding mooring ropes from all directions, greatly reduce the abrasion of mooring ropes. The fairlead compact structure and reasonable openings are not only for ordinary vessels towing or mooring but also for navigation in the canal waterway ship is towed or moored.
ISO13733 Roller Fairlead with Upper Roller
The roller fairlead is manufactured according to the ISO 13733 standard with an upper roller. It is a type of ship’s mooring fitting installed on board to lead the mooring rope from the ship’s inboard to outboard. The fairlead is also known as universal fairlead because it can lead the mooring ropes from different directions. All surfaces shall be free from any visible flaws or imperfections. It is coated externally with an anti-corrosion protective finish. The rotating parts are provided with greasing. Depending on the construction, the roller fairleads shall be classified as four types as below, which includes type 4R, type 5RL (with additional guide roller on the left side), type 5RR (with additional guide roller on the right side) and type 7R.
Horizontal Guide Deck Sheave
The horizontal sheave is a type of mooring fittings to guide the mooring rope horizontally on the deck. It is also named the horizontal deck sheave fairlead. It is built to withstand breaking strength of indicated rope at 90-degree sheave wrap on the sheave. The warping angle of the sheave can be 90-180 degrees. It is made from cast steel with hardened rope groove for longer life. It is on a weld down the mounting base with an epoxy primer coating.
DIN 81906 Warping Roller Fairlead
The warping roller is made according to the standard of DIN 81906-1999. It must be identified clearly and permanently with the nominal size and manufacture’s symbol. It is made from cast iron or cast steel material and the materials must conform to the DIN standard’s requirement, which increases the durability, good wear and corrosion resistance to ensure a long service time. Its maximum towing load is from 10KN to 320KN. It is used to guide rope or cable.
A40 Swivel Head Anchor Fairlead
The A40 swivel head anchor fairlead is the heavy-duty single sheave fairlead. It is made of high-quality steel. It is fitted with a removable guide roller and hardened rope groove to ensure long-time use. It is suitable for use in most deck-mounted or flange-mounted marine-duty applications, which can be manufactured with welded foundation or bolted foundation. It can be used for guiding ropes in ship mooring and will not break down. The fairlead is designed for breaking strength of wire with 90° wrap on sheave and +/- 90° rotation of swivel head.
Features:
a. designed for breaking strength of wire with 90° wrap on sheave and +/- 90° rotation of swivel head;
b. sealed lubricated tapered roller bearings;
c. hardened rope grooves for longer life;
A38 Swivel Head Anchor Fairlead
A38 swivel fairlead is one kind of the heavy-duty double sheaves fairlead. And the anchor fairlead can be supplied with a welded and bolted foundation for the installation on the deck of vessels or on the dock. It is one kind of roller fairleads with high breaking strength to suit wire rope for ship mooring. It is designed with 90° wrap on sheave and +/- 90° rotation of swivel head. The shape of the opening is approximately elliptical.
A39 Swivel Head Anchor Fairlead
The swivel head fairlead is the heavy-duty balanced anchor fairlead and is installed on the deck of ships. It is suitable for use in most deck-mounted or flange-mounted marine-duty applications, which can be manufactured with welded foundation or bolted foundation. At the beginning and end of the fairlead, there are the same size front panel and back panel. The surface of the opening is smooth to avoid the abrasion of anchor chains. With the compact structure and reasonable opening, the swivel fairlead is applicable to not only ordinary ship towing or mooring but also to ships sailing in the canal waterway.
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March 15, 2022
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YSmarines is a professional marine rubber fender supplier, which is available in the widest range of sizes of any fender type and provides high-quality product with the most competitive price and good after-sale service.
Super Cell Rubber Fender (SC Type)
Super cell rubber fender is one of the most proven and reliable marine fender styles ever designed and historically has been the most commonly used fender in the industry. The fender originally is designed to replace the cylindrical fender which has more than 30 years of record of accomplishment with only some minor improvements over the years.
They are designed to absorb the collision energy between ship and dock at the time of berthing for berths, dolphin wharf, offshore docks, and terminals. Cell fender geometrical shape gives it sturdiness, shear resistance, compact structure and the capacity to absorb energy equally from all directions. The cylindrical-buckling column absorbs axial loads efficiently and buckles radially. To distribute the reaction force, they are typically supplied with large fender panels, which keep the hull pressure low. The large mounting flanges serve to distribute the super cell rubber fender loading over the back of the fender panel frame and allow easy installation of the mounting bolts. It is designed to deflect in an axial direction.
Features
Reasonable structure
High energy absorption and low reaction force
Excellent under berthing angle and shear
Suitable for a large wharf
Super Cone Rubber Fender (ZC type)
The super cone rubber fender is also known as ZC type rubber fender. Cone fender is one of the most efficient rubber fender types. The super cone rubber fender is updated generation of cell rubber fender with excellent energy absorption and low reaction force. The structure of the fender is more reasonable. Owing to its unique conical fender structure, it always has excellent performance under different berthing conditions especially where large berthing angles and heavy impacts need to be accommodated. The conical body shape makes the fender very stable even at large compression angles. The deflection can reach 70%, and the equal specification fender energy absorbs raise one more time with long life using. The fender can reduce the cost of the dock project. While vessel angular berthing, the performance unchanged.
They are fully rubber-embedded mounting flanges. Usually closed box steel panel mounting with UHMW-PE plastic pads is an important part of a complete super cone rubber fender system. Fender frontal panel can lower the surface pressure of vessel sideboard and low friction UHMW-PE plastic pads to lower shear loading between fender and vessel to extend the service life of the fender. The Cone fender comes in a wide range of standard sizes, can meet mufti-berthing conditions.
Features
Outstanding energy absorption to reaction force ratio (E/R)
High shear stability
Reducing the pressure during berthing
No loss of performance up to 10° approach angle
Anchor recesses for easier installation
Cylindrical Rubber Fender (Y Type)
The cylindrical rubber fender also named Y type rubber fender can often be installed at less cost than types having equal energy capacity. It offers a means of lower fendering costs when there is a large variation in the size of the incoming vessels. The rubber fender has a very long history due to simple design and easy installation, which makes these units an economical solution for remote locations and for multi-user berths where vessel type cannot always be predicted. The progressive load-deflection characteristics make it suitable for both large and small vessels, with a wide choice of sizes and diameter ratios. The type of marine rubber fender is available in an outside diameter up to 1600 mm and inside diameter ranging from 75 to 800 mm, variable in length up to 5500mm. It is applied for longitudinal and crosswise sway of ships while berthing at the dock and widely used for the ships with different sizes and different docks.
The installation of the cylindrical rubber fender is simple by using chains, bars, ropes or specially designed ladder brackets, depending on the fender size and substructure. There are several different installation methods available for different sizes, small cylindrical rubber fenders, typically up to 600mm OD, are suspended with chains through their bore connected to brackets or U-anchors each end. With small tidal ranges, they are usually mounted horizontally. In large tidal ranges, small cylindrical rubber fenders can be diagonally slung. Large cylindrical rubber fenders up to 1600mm OD are usually suspended using central bars with chain supports at each end connecting back to wall brackets or U-anchors. For very heavy duty applications and for fenders above 1600mm OD, ladder brackets mounting systems are recommended. The cylindrical rubber fender can be provided in specified lengths and the ends can be beveled.
Features
Low reaction force and small surface pressure.
reasonable energy absorption.
Suitable to rolling and pitching of berthing vessels.
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March 15, 2022
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YSmarines, which is one of the leading marine rubber fender manufacturers in China, offering different types of rubber fenders for all sizes and shapes of vessels, the most reasonable prices, with IACS approvals including CCS, ABS, BV, LR, KR, DNV-GL, NK, RMRS and RINA.
D Type Super Arch Rubber Fender (DD & DO)
The rubber D fender can be pre-curved, chamfered and drilled to aid installation at a relatively low cost and can also be cut to the length required. The D type fender provided by YSmarines which is one of the leading suppliers for the marine products in China with the best price guaranteed offers an excellent barrier against damage from all sizes and shapes of vessels. It is one kind of profile rubber fenders they have D shape outer profile widely be used as beltings and protective fenders on many tugs workboats and small jetties with long-term durability for applications where repeated compression cycles which are encountered in pushing service.
There are three types of D type rubber fenders. One is with a cylindrical bore inside, which is known as DO type rubber fender, one is with a “D” shaped bore inside, which is known as DD type rubber fender, and the last one is with a solid bore, therefore, it is known as solid d type rubber fender. Both DO type and DD type share the same flat rear face which makes them easy to install between parallel flat bars and bolt fixings. They can be supplied in a long sections with maximum length restricted only by transport and handling limitations, they can be cut to length, angle cut at the end drilled or pre-carved as required for each application.
D type fender offers the excellent physical characteristics needed to handle the high loading, which occurs both on initial contact, and throughout the service cycle. The rubber fender could be equipped both at the smaller and at the top front of the harbor as the second defense line together with the other fenders. Normally, It should be equipped continuously so as to avoid the direct impact of the ships when abnormal harboring happens.
Features
1. Excellent physical characteristics.
2. Good adaptability of transverse of eongituaind shake of ships during mooring.
3. Applicable for frame dock due to the smaller bottom width.
4. Available for curved shaped type rubber fender in any angle.
Yokohama Pneumatic Rubber Fender
The Yokohama pneumatic fender is a bumper with air as bumping media. Impact energy is absorbed by compressed air so that the ship can berth softly to protect the ship from bumping. The rubber fender is widely used for oil tankers, container vessels, yachts, ocean platforms, large wharf and naval ports, etc. It is suitable for ship berthing of all directions and has been widely used in many types of ship berthing in ports. It has various sizes of D0.5m*L1m – D4.5m*L12m. It can be protected by tire net chains and can be also used without the tire net as well.
It can easily be deflated which allows simple and cost-effective relocation and re-commissioning in other locations. Pneumatic rubber fenders have the merits of high-pressure resistance, high-energy absorption low reaction, aging resistance and saltwater corrosion resistance. They support berthing at angles up to 15 degrees for oil tankers, container vessels, bulwark carriers, yachts, ocean platforms, large wharf and naval ports, etc. We have two types of molded pneumatic fenders: pneumatic rubber fenders equipped with chain-tire-net wildly used for ship to ship transfer operations and hydro pneumatic fenders equipped with counterweight and ballast water designed for a submarine berth, which can be installed vertically. The ISO 17357:2014 compliant chain-tire net pneumatic fender (CTN) is a lattice of used tires connected by a network of horizontal and vertical chains, which adds further protection to the fender body. The chains are galvanized for greater corrosion resistance and covered by rubber sleeves to prevent abrasive damage to the outer rubber. The horizontal chains are fastened at each end to a ring shackle. The rubber fenders are supplied with two different inside pressure levels to cover a wide performance range, 50kPa & 80kPa.
Features
1. High strength and friction resistance.
2. High energy absorption with a low reaction force.
3. Adjusted performance by varying internal pressure.
4. Low and easy maintenance.
5. Low transportation costs - pneumatic fenders can be deflated and folded for transport.
6. Easily deflatable to be used in a different location and to be stored on deck.
SA Type Super Arch Rubber Fender (V Type)
The SA super arch fender also known as V type rubber fender is a kind of marine rubber fender, which can also embedded steel mount and nut on the top of the fender. It connects the front panel, UHMW-PE face pad installed outside of front panel, which lowers the friction factor between vessel and fender to avoid the damage of vessel and raises the utility of fender life. The design of the SA fender is simple and durable, providing trouble-free service for a wide range of berths even under the toughest conditions. It has better stability and stronger attachment to the supporting structure than the traditional arch rubber fenders. It is made of quality natural rubber resistant to weather, seawater, cutting, abrasion, etc. The designs are simple and rugged, providing reliable and trouble-free service for a wide variety of ports. The rubber fenders are tough and reliable, simple and long-lasting, providing trouble-free service for a wide variety of berthing even under the most severe conditions.
The super arch fender has better stability and stronger attachment to the supporting structure than the traditional arch /v rubber fenders. It connects the front panel. This design can reduce the torsion at the bottom of the fender dramatically, the prolong the life-span of the rubber fender body. The UHMW-PE face pads have various colors and can be replaced easily.
Features
1. Suitable for various applications;
2. Very robust, durable and requires low maintenance;
3. High shear resistance in the longitudinal direction;
4. Can be installed both vertically and horizontally;
5. Suitable for turning dolphins & pivot points.
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December 10, 2021
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Marine anchors can act as drogues (positive drag mechanism) for ships and other such vessels during storms. They provide a restoring drag that keeps the vessel stable and steady and prevents slamming of the bow or flooding through green water loading during unsteady conditions.
Danforth Anchor
The Danforth is a lightweight, cheap and easily storable design that uses two triangular blades or flukes attached to the shank to hook or dig into the ocean bed. The gap between the flukes allows for the Danforth anchor to grip onto debris and rocks instead of simply acting as a sail against the water currents. Also, the shank and flukes are hinged, so that the orientation of the flukes can be changed depending on the type of material on the seafloor.
Stockless Anchor
Stockless anchor is a normal type of stockless anchor with a small ball on a fluke. With the stockless design, it fits the anchor pocket perfectly. It is commonly used in commercial vessels and recreational craft. It is made high quality cast carbon steel and is a great mooring device for fishing boats due to the large holding power and easy storage.
Spek Anchor
Spek anchor is one type of the stockless anchor. It is the improved anchor with a lower point of gravity from the hall anchor, whose core of anchor head is located in the center of the pin centerline to the bottom. The structure of spek anchor is characterized that there is anchor crown plate and reinforcing ribs at the anchor crown. The anchor claw is easy to turn to the ground and then has a better stability. The smart design makes it a perfect fit for the anchor pocket.
Bruce Claw Anchor
This type of bruce claw anchor is commonly referred to as the claw because of its shape and design. It is used to hook into the rocks at the bottom of the ocean and then settle in. However, it does not work when the material at the bottom is loose sand, silt or mud. Also, weeds and other structures can entangle the claw of the anchor without providing any actual anchoring force. Instead, they tend to impede the recovery of the anchor when it is time for the vessel to move on.
Other types of equipment that are used in conjunction with an anchor to hold down a vessel or installation floating on the surface of the water include riggings (such as trip lines), anchor chains and ropes, stowage equipment, etc. Anchor chains and ropes are an important factor in determining the reliability of a given anchor since these provide the only connection between the structure and anchor. They must be able to withstand tremendous amounts of force both in tension and contraction. Similarly, trip lines must also be strong enough to apply force on the anchor to orient it in a particular direction.
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December 10, 2021
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Does your marine have an anchor? If so, is it of sufficient size and strength to hold your marine in place? Believe it or not, many marine owners decide on which anchor to buy based on convenience and storage space. Before you select a marine anchor, read these tips to get started making the best choice.
Weight
Bigger is better when choosing anchor weight. You won’t need as much for holding the marine in a quiet cove, but you will need much more weight for an emergency situation in the wind. You can also carry two anchors of differing weights. A smaller “lunch hook” is adequate for short anchorages in calm water when you will be keeping watch on the anchor. You’ll also want to have a larger “working anchor” for overnight trips or when going ashore in gusty winds. Using two differing anchor styles can also be beneficial, especially with high-profile marines like pontoons.
Bottom conditions
Holding power and weight is only as good as the anchor’s ability to penetrate the bottom. Anchors easily penetrate hard sand bottoms, which offer consistent holding power. You get less in mud, which the anchor must penetrate to reach a harder secondary bottom material. Anchor weight is more important than design in difficult grassy bottoms.
Holding power
It might make sense to choose an anchor based on the weight of the marine. However, anchors are rated by their holding power, or the amount of pull force the anchor must withstand to hold the marine in place. Holding power is formulated based on environmental factors, like wind speed. As a general rule, holding power of 90 pounds is sufficient for safely anchoring a 20' marine in winds up to 20 mph. For the same wind speed, a holding power of 125 pounds is adequate for a 25' marine. This is why high holding power anchors that rely strictly on their weight—such as a space-saving, plastic-coated 10-pound mushroom anchor—are only capable of generating more than twice their weight in holding power. A 20' fiberglass bass marine using a 20-pound anchor will always drag if the design is the only buying consideration.
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December 10, 2021
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An anchor is a vital part of the boat and is one of the most widely used items in the marine industry. The anchor is used to protect your boat. YSmarines which is one of the leading marine anchor suppliers, provides excellent quality products with high performance, beautiful design, maximum protection for boats and various types to meet customer's requirements.
Fluke
Danforth anchors, are the top choice for most marines with overall lengths of 30' or less. Fluke anchors provide sufficient holding power considering their small size. By design, they fold flat and are easy to stow in storage compartments. The anchor arm, or stock, buries itself after the pointed flukes dig into the bottom. For those reasons, fluke anchors are best in hard sand and mud. The flukes can’t penetrate rocky bottoms and are not recommended for slick, grassy bottoms. Loose mud or clay can foul the flukes and prevent bottom penetration.
Navy
The Navy anchor gets the nod for filling in for what the fluke anchor lacks. Navy anchors have long stocks and distinct arks and flukes. They are ideal for heavy grass, weeds and rocky bottoms where one arm can take hold of a crevice.
Claw
Claw anchors have great holding power for their size. Modeled after oil-rig anchors in the turbulent North Sea, the downsized marineing version sets effortlessly and holds in a variety of bottoms. Claw anchors are ideal for the windy conditions for which they are designed. They will hold no matter how much the marine swings around on the hook. Claw anchors are the obvious choice for large, open bodies of water.
Spek
Spek anchor is one type of the stockless anchor. It is the improved anchor with a lower point of gravity from the hall anchor, whose core of anchor head is located in the center of the pin centerline to the bottom. The structure of spek anchor is characterized that there is anchor crown plate and reinforcing ribs at the anchor crown. The anchor claw is easy to turn to the ground and then has a better stability. The smart design makes it a perfect fit for the anchor pocket. And the anchor flukes will keep naturally upwards and overturn immediately when touching the hull plate to avoid damaging the shell plating.
TW Type
The TW type pool HHP anchor has more than 2 times holding power than the conventional anchor of the same weight. The anchor has large flat flukes made out of high tensile steel plate material. The thickness varies from 15 mm up to 140 mm depending on the anchor size. It allows a weight reduction of 25% compared to a conventional anchor for the same equipment number It has a fully balanced type and unbalanced type. The fully balanced type always has its flukes in a vertical position while lifting the anchor. The unbalanced type will tip over to one side.
Mushroom
Ideal for canoes, kayaks and jon marines, the mushroom anchor works best in soft bottoms, where it creates penetration based on suction. Makes a decent lunch hook anchor, but is not recommended as the primary anchor.
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December 10, 2021
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Marine watertight doors are available in aluminum, steel or a combination of these metals meeting IMO, SOLAS requirements. It can be opened and closed quickly and lightly. It is used for bulkheads with water tightness requirements. It can prevent the ingress of water from one compartment to another during flooding or accidents and therefore act as a safety barrier.
It limits the spread of water inside the vessel. These doors are used onboard in many ships such as in the fore and aft passageways underdeck and in engine room bulkheads leading to shaft tunnels in container vessels, large passenger ships, offshore vessels, oil exploration vessels.
They are used in areas where the chances of flooding are high. Areas such as engine room compartments and shaft tunnel and some of such places.
Therefore it is important that crew members are familiar with the system as well as the location of different powered watertight doors aboard the ship.
Watertight as defined in SOLAS is: capable of preventing the passage of water in any direction under the head of water likely to occur in intact and damaged conditions.
Weathertight is defined as that in any sea conditions water will not penetrate the ship.
To make it simpler, a watertight door can prevent the passage of water in both directions when subjected to ahead of water i.e it can withstand water pressure from both sides. They are designed to withstand continuous submersion and are therefore located below the waterline like shaft tunnels, ballast tanks, bow thruster compartments, etc. all openings below the waterline have to be watertight.
Watertight Doors Drill on Ships
1. Drills for the operation of watertight doors shall take place every week. Also, the doors should be checked before leaving the port.
2. All watertight doors, both hinged and power operated should be operated daily during the rounds.
3. The door should be able to operate from both local and remote places. i.e. bridge and ship control center.
4. If the door is operated from a remote location, there should be an audio and visual alarm during the closing
5. There should be an indication of both open and close on the remote place of operation.
Maintenance of Watertight Doors
The ship’s planned maintenance system must be followed for carrying out routine inspection and maintenance on watertight doors which should include the correct functioning of the whole system and specifically:
Warning devices and alarms
The electric/hydraulic mechanism
Valves
Fluid level indicators
Seals
Lights
All marine watertight doors provided by YSmarines have the certificate of GL- DNV, CCS, BV, ABS, LR, KR, RS, etc with customized sizes and colors, superior quality. For more detailed information, please visit the official site of ysmarines.com.
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December 10, 2021
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Comfort and fit are two important aspects of boat seating. There are many different styles and levels of comfort to choose from, similar to how there are many different styles of couches or recliners you can buy for your living room at home. Selecting the right marine seat depends on you and your level of comfort as well as the style that you are looking for. YSmarines can supply a wide range of marine seats with great comforts and the best suitability. The seats can be widely used for larger boats and smaller vessels. The seats come in various trims and can be tailored to the requirements of the customers.
Bench Seats
These seats are longer and built for more than one person at a time. Bench seats come in a variety of sizes, usually somewhere from 28 inches in length to 65 inches in length. They are closer to a love-seat or couch, like what you would find in your home. There’s no armrest between each other, and you could also lay down on them. Bench seats are very comfortable. You would typically find these seats on pontoon marines and cruisers. Storage could also be found in the base located below the seat cushions.
Swivel Seats
This type of seat is typically found on fishing marines, so it makes it easier for the fisherman to move around while fishing. They are usually a smaller type of seat with a lower backing, although you can spend some extra money to get a higher back, as well as some armrests. There are a few benefits to using a swivel seat such as they could be removed, spin 360 degrees, they’re self-lubricating with non-corrosive poly swivel bearings, and they can fit most standard seat holes patterns.
Captain’s Chairs
There are many different types of marine captains chairs to choose from, and they range widely in quality. Prepare to spend at least a couple hundred dollars and up. They could even run you into the thousands for a top of the line captain’s seat. Captain’s chairs are similar to bucket seats but tend to have armrests and can be adjustable to fit the captain of the marine. With special manufacturing, it is suitable for all kinds of luxury passenger ships, yachts, and so on. The seat can move on the double-sliding rail. The backrest of the seat is angle-adjustable. The armrest can be adjusted and foldable. The height of the seat can be adjusted freely. There is a seat security locking handle to ensure safety.
Leaning Posts
These seats are typically used on center consul marines as well as bass marines. Leaning post seats can come with or without a backrest, and if it comes with the backrest, then the backrest would also be removable. You can use them as a leaning post, a seat, or a bench. There’s usually a foot rail and handrail that goes around. Most leaning post seats also have four holes at the back for your fishing rods to sit in.
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YSmarines is one of the most professional marine window manufacturers in China. All windows are made according to the certificates of CCS, BV, ABS, LR, DNV-GL, KR, etc, customized design is available, durable, watertight, tough side scuttles with high quality, heavy, medium or light duty portlights.
Marine Aluminum Sliding Window
Standard: CB/T 3765-1996
Type: Aluminum single sliding window, Aluminum double sliding window
Available certificate: CCS, BV, ABS, LR, DNV-GL, KR, etc
Installation Method: Bolted in
Marine Rectangular Window
Material: Brass, aluminum, steel, or a combination of them
Series: Common series(N), fire protection serious(P), heating serious(H)
Opening Type: Opening, Fixed
Available Certificate: CCS, ABS, BV, LR, DNV-GL, KR, etc
Installation: Bolted in or welded
Sort: Heave(E), light(F)
Option: Clear view screen
Marine Side Scuttle Porthole Windows
Side scuttle
Standard: GB/T 14413-2008
Material: Steel, Brass, and Aluminum
Installation Method: Bolted or welded.
Deadlight: With or without dead-light.
Available certificate: CCS, BV, ABS, LR, DNV-GL, KR, etc.
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A marine anchor is an indispensable device for ensuring ship safety, which is used to stabilize the ship when the ship is not parked or mooring without a buoy. When some ships enter the berthing area, the anchor will be thrown into the water for steady berthing.
Why Marine Anchor Used For Smooth Boat Berthing
How does an anchor can stabilize a ship? Because the anchor is sinking to the bottom, which will generate a huge grasp force, and the gravity of the marine anchor chain itself is large enough. The ship will be fixed.
When the ship needs to be temporarily moored, the ship anchor will be thrown out. An extra length of the anchor chain will be put to more close to the bottom of the sea. As the anchor is slowly sinking, the fluke of the anchor will have contact with the underwater bottom. At the same time, the anchor fluke under the seabed will be subject to a horizontal tension force. Under the dual role of tension force and gravity, the anchor is slowly inserted into the seaside, which is getting stronger and ensures stable berthing and water safety.
The anchor chain is also very important, the total weight of the anchor chain is much larger than the anchor. The length or the anchor chain is several times larger than the water depth, and there is a relatively long anchor chain is lying on the water bottom, and the underwater also has a great friction resistance to the anchor chain.
How To Select The Anchorage
When the boat anchor is thrown, the boat cannot be started and control normally and will be drifting everywhere, so a safe and suitable anchorage should be selected before throwing, surveying its topography and choosing the appropriate mooring area.
The selected anchorage ground should have the appropriate water depth, no large waves, good shielding.
1. When the anchor station is selected in the deepwater area, the largest water depth of the anchorage generally does not exceed 1/4 of the total length of the anchor chain. Otherwise, the anchorage grasps will be affected.
2. The geological and terrain of the anchorage should be good, with moderate soft and hard bottom and clayey seabed, so that the anchor grasp force is better.
3. It is best that the terrain around the anchorage can provide a natural barrier to the vessel, which makes the anchor to get better into the underwater bottom, becoming more secure, so that the ship has stable berthing.
4. The anchorage should also be away from the channel, the water area and there is no cable below.
Main Types Of Marine Anchor
1. Danforth anchor
Danforth anchor is the first generation of high holding power anchors and belongs to stockless anchors with a large grasping weight ratio and rodent area. The gripping bottom is deep and numerous, and the grasping force is extremely large. But the anchor fluke is easily broken and the storage is inconvenient, not suitable for transportation boats.
2.Bohr anchor
The Bohr anchor is also called TW type anchor or N type anchor. It has more than 2 times the holding power of the conventional anchor of the same weight. The anchor has large flat flukes made out of high tensile steel plate material. It is used as a bow anchor when sailing.
It is designed to fit into small anchor pockets on modern ships and the hollow flukes are welded from two plates to create strong anchoring performance under various circumstances.
3.Hall anchor
Hall anchor is also known as the mountain anchor, which is a stockless HHP anchor, free to rotate, inclined to stock. The anchor head and the anchor fluke are a whole casting. When a lying anchor is contacted with the underwater bottom through any side of the anchor, the resistance generated by the anchor head strip friction discharge soil is forced to generate the grasp force of the anchor.
4.Spek anchor
The Spek anchor is a modified Hall anchor. Plate and reinforcing rib are installed at the anchor crown. Therefore, the fluke of the anchor is easy to turn to the ground with high stability and when stores the anchor, the anchor fluke naturally facing up. Moreover, in contact with the boat shell, it will not damage the boat shell plate.
5.AC-14 anchor
AC-14 anchor is a stockless HHP anchor with a wide anchor crown, thick and long flukes, and longitudinal ribs. It is available in a self-colored finish or in a galvanized finish. Its design provides excellent weight to performance ratios. The lighter weight which is 25% weight reduction compared to conventional anchors and high holding power makes it good stability and then it is commonly used as the main anchor on large container ships, supertankers. It has an excellent performance in a variety of soils.
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