Marine Link
Monday, June 21, 2021

Winch

A winch is a mechanism used to reel in, to let out, or otherwise adjust the tension of a rope, wire, or cable. Boats and ships make use of multiple winches to handle halyards, sheets, as well as anchor or mooring lines. The basic mechanism consists of a spool or winch drum to wind in and store the line. The line can be manipulated by something as simple as a hand crank, but larger winches may incorporate gear assemblies and are powered by electric, hydraulic, pneumatic, or internal combustion drives. Some use a mechanical or a solenoid brake to control the line; occasionally a ratchet and pawl setup prevents the spooled line from unwinding. Some types of winches, commonly referred to as "self-tailing", make use of a "stripper" or cleat to maintain the proper level of tension on the line.

In larger forms, winches form the mechanical base of tow trucks, steam shovels, cranes, and elevators. Outside of their marine and industrial uses, winches are used to tow all kinds of vehicles. Planetary winches and worm gear winches are two winch types currently in use for this purpose. Planetary winches are commonly found on the front of road vehicles such as trucks and SUVs. They have a fast line speed, but should be restricted to light duty. A worm gear winch is designed to have a slower, consistent pull in order to hold a heavy load. These types of winches are usually seen on car hauling trailers, and larger work trucks.

Tags: Winch

Foss' Leisa Florence ASD-90 tugboat, sister vessel to Rachael Allen (Photo: Foss Maritime)

Foss to Operate Autonomous Harbor Tug

Foss Maritime’s newest vessel will be the first U.S.-flag harbor tug to integrate…

Combined windlass-mooring winch (Image: MacGregor)

MacGregor Launches New Range of Winches

Marine and offshore equipment manufacturer MacGregor introduced its next generation…

JonRie Marine Winches debuted its new Series 525 Double Drum Bow Winch designed for a 6,770 HP ASD.

TECH FILE: JonRie Debuts New Double Drum Bow Winch

JonRie Marine Winches debuted its new Series 525 Double Drum Bow Winch designed for a 6,770 HP ASD.

(Image: Crowley)

Crowley Designs US' First Fully Electric Autonomous Tug

Crowley Engineering Services announced Monday it has designed the first fully electric U.S.

The enhanced winch control provides a safe, efficient and reliable way of deploying water sampling equipment at depths up to 5,000 meters in even the roughest sea conditions. Photo courtesy ABB

Tech File: Enhanced Active Heave Winch Control

Hawboldt Industries installed an ABB winch drive with in-built active heave compensation…

(Photo: MacGregor)

MacGregor Wins Order for 36 Traction Winch Systems

MacGregor, part of Cargotec, has secured an order from SIA Solutions LLC to deliver…

(Photo: Robert Allan Ltd.)

New Tug Built for Port of Shanghai

China's Sanlin Shipyard has built and delivered a new harbor tug for the Port of…

Svitzer North (Photo: bert Allan Ltd.)

New Tug Delivered to Svitzer Australia

Svitzer Australia recently took delivery of a new RAstar 3000-W series ASD tug, Svitzer North…

Chartwell Marine selected to design and specify build for new low emission university research vessel, in collaboration with BAE Systems and Derecktor Shipyards. Image: Chartwell

Derecktor Wins Deal to Build Hybrid RVl for University of Vermont

The University of Vermont (UVM) has ordered what is touted as the first hybrid research vessel…

(Image: Gladding-Hearn Shipbuilding, Duclos Corporation)

Associated Federal Pilots Orders Launch From Gladding-Hearn

The Associated Federal Pilots in Metairie, La., has ordered a Chesapeake Class pilot…

(Photo: Robert Allan Ltd.)

PSA Marine Takes Delivery of Two New Tugs

Singapore's PSA Marine recently took delivery of two new 32-meter harbor tugs, PSA…

(Photo: Armstrong Marine USA)

Armstrong Delivers 45' Pilot Boat to Alaska

Port Angeles, Wash. boatbuilder Armstrong Marine USA said it recently delivered the…

Related Articles

Navigation

Navigation, derived from the Latin words "navis" (meaning  "ship") and "agere" (meaning "to drive") is the process of accurately determining the position and controlling the movement of a craft or vehicle along a desired course. This is accomplished…

Maritime Standards

All nations require certain standards be met by ships and other marine structures which fly their flag. A classification society, or "Class", is a non-governmental regulatory association which regulates construction of vessels and offshore structures in the maritime industry.

Shipbuilding / Vessel Construction

Shipbuilding is the construction of ships, which takes place in a specialized facility known as a shipyard. Shipbuilders, also called shipwrights, are workers which specialize in vessel construction and repair. The construction of boats is called boat building.

Pod Propulsion

Pods are devices which combine both propulsive and steering functions in one device. They are usually located below the stern of a ship, making use of the following internal components: a fix pitch propeller, shaft, thrust and support bearings…

Ship Electronics

Electronic devices classed for use in the marine environment. All electronics used onboard must be designed to fit in the small confines of a bridge and can come in contact with salt water, so they are made to be very water resistant or waterproof.
Maritime Reporter E-News subscription

Maritime Reporter E-News is the maritime industry's largest circulation and most authoritative ENews Service, delivered to your Email five times per week

Subscribe for Maritime Reporter E-News