Fender (Boating) Information
In boating, a fender is a bumper used to keep boats from banging into docks or each other.
Fenders are nowadays constructed from a rubber or plastic hull filled with air or foam. Historically, they were woven from rope in a variety of patterns still used today by historic boat owners.
Boats usually have mobile fenders which are placed between the boat and the dock as the boat approaches the dock. Docks and other bodies to which boats may approach, such as canal entrances and bases of bridges, have permanent fenders placed to avoid damage from boats. Old tires are often reused as fenders in such places.
Marine fenders: Marine fenders are used at ports and docks on birth wall. They are used to keep boats from banging into docks or each other to avoid damages to wall. There are many types of marine fenders such as
- Cylindrical fenders
- Arch fenders
- W fenders
- I fenders
- Cell fenders
- Cone fenders
- Pneumatic fender
- Strip fenders
Boat fenders: Boat fenders are used on the ship basically. Boat fenders required for small boats, tug boats, small ferries, naval speed boats and vessels, passenger vessels, luxury yachts, fishing boats, etc. Boat fenders also available in different types such as
- D fenders
- Square fenders
- Wing fenders
- Keyhole fenders
- Tug boat fenders
Application & function of fenders
- Cylindrical fenders
Cylindrical fenders are commonly used fenders recommended for all types of application to ensure a safe and linear berthing for the different kind of Vessels. fenders are an economical solution to protect most of the berthing structures and offer much ease for installation.
- Arch fenders
Arch fenders were introduced to improve upon the performance of Cylindrical fenders. Arch fenders are having a better Energy / Reaction force ratio and recommended for all types of applications. The very shape of these fenders helps to dissipate the stresses evenly. These fenders are very easy to install and are maintenance free. Generally preferred for small to medium range Vessels.
- W fenders
These fenders are having more deflection and better Energy / Reaction ratio in comparison to both Cylindrical, Arch & Flat Top Arch fenders. Because of wide Fender face, the Hull Pressure is also relatively low as compared to both Arch and Flat Top Arch fenders. All types of big Vessels can be berthed on these fenders due to its better resilience and higher deflection.
- I fenders
These fenders are the most ideal choice for critical heavy duty applications where berthing conditions are not generally favourable. These fenders are best option for open sea Berthing Structures / Dolphins / Jetties, where extreme wave and current conditions are prevailing.
- Cell fenders
Cell fenders are best employed for smallest to biggest Vessels where Reaction Force is an important criteria. Among all types of fenders, Cell fenders offer minimum reaction per ton-meter energy absorbed. The very 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 effectively and buckles radially. This results in multi directional dispersion of energy.
- Cone fenders
Cone fenders are an improved version of Cell type Fender recently introduced and recommended for all type of applications including high tidal variation sites. This advanced feature of lesser height of fenders improves material handling capabilities of Deck / Vessel Cranes which reduces overall cost of the project. Due to the geometrical shape of the fenders it can deflect more and it can absorb more energy from any direction.
- Pneumatic fenders
These fenders are extensively used for ship to ship transfers at mid seas, double banking operation as well as vessel to berth at dock/jetties. The Special property of Pneumatic fender is its Low reaction force at low Deflection. This very property of Pneumatic makes it most suitable fender for Liquid cargo Vessels and Defense vessels with very sensitive equipments.These fenders offer excellent Energy Absorption characteristic and do have a linear Load Deflection Characteristic.
- Strip fenders
These fenders are extremely robust and could absorb large impacts without deformation.. Dipti Strip fenders are resistant to wear and tear more so, by the virtue of its capability to rotate in the direction of the impact.
- D fenders
D type fenders are commonly used on Tugs, Vessels, Boats ect. These fenders are also used for extensive application on small jetties and fishery harb ours too. They are compression moulded with steel inserts if required.
- Square fenders
Square fenders are used on tugs,vessels,boats ect. "DockGuard" DSQ-A series square fenders also find extensive application on small jetties and fishery harbor too.They are compression moulded fenders generally used on tugs, boats and ships.
- Wing fenders
Wing fenders are used on tugs,vessels,boats ect. They are compression moulded fenders generally used on tugs, boats and ships.Easy to install and replace.Do have excellent sea water resistance and resistance to ozone aging and ultra violet rays.
- Keyhole fenders
Keyhole fenders are the most versalite bow, stem fenders used on the Tugs Boats and small Port Crafts/Ferries.They offer maximum protection to the Tugs/Ferries with its typical profile and loas absorbing capabilities.
- Tug boat fenders
These fenders are made of high abrasion resistance rubber with good resilience properties for required application. They are very popular with small port craft owners and tug owners. These fenders are compression moulded in high pressure thermic fluid heated moulds and do have excellent sea water resistance.
The fenderboard is used to go alongside a pile.| Wikimedia Commons has media related to: fenders |
Categories: Nautical terms
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