Glossary Archive

The direction which a current flows in a body of water. In marine navigation, understanding the set of a current is crucial for plotting an accurate course. The set is always described in terms of the direction in which the water moves rather than the direction from which it originates. For example, if the current...

The process of securing a boat in a stationary position by deploying and embedding an anchor into the seabed. When a mariner 'sets anchor', they are ensuring that the anchor is deployed correctly and securely lodged in the seabed to prevent the vessel from drifting due to wind, currents, or tides. The process begins by...

To "set sail" means to begin a voyage or journey by sea, typically by hoisting the sails of a sailboat or ship to catch the wind and propel the vessel forward. "Setting sail" is a phrase deeply rooted in maritime navigation traditions. It refers to when a wind-powered vessel begins its journey by raising its...

A U-shaped metal fitting with a pin or bolt across the opening, used in marine applications to connect ropes, chains, or other fittings securely.  A shackle is an essential piece of hardware in the maritime world, widely used for securing and connecting various components of a vessel's rigging, anchor systems, or mooring lines. It typically consists of...

Many sailing vessels and most motor cruisers will have a shaftdrive transmission system. A shaft runs from the gearbox, through the hull beneath the waterline to the propeller/s.

Shaft drive refers to a method of transferring power from an engine to a boat's propeller. In this system, a driveshaft connects the engine to the propeller, transmitting power through gears or a universal joint, usually through a cutlass bearing. Shaft drives are commonly used in larger vessels and provide reliable and efficient propulsion. They...

A line or rope used to control the angle of a sail relative to the wind. In sailing, a sheet is an essential part of the rigging system and plays a crucial role in adjusting the sail's position to optimise the boat's performance. Sheets control the trim, or angle, of the sails. Each sail on...

Weather forecast broadcast four times each day by the British Broadcasting Corporation (BBC) for the benefit of those at sea

A busy track across the sea or ocean

Neat and efficient