Glossary
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TermDefinition
- General Nautical Terminology, Weather (Meteorology) Southeast Iceland
Sea area of the Met Office Shipping Forecast. Located southeast of Iceland in the North Atlantic.
Southeast Iceland covers waters renamed from...
More Details - General Nautical Terminology, Weather (Meteorology) South Utsire
Sea area of the Met Office Shipping Forecast. Situated in the North Sea, south of Utsira Island off the west coast of Norway.
Also named for...
More Details - General Nautical Terminology Sou’westerA waterproof oilskin hat with a broad brim
- Flag Semaphore Space (Flag Semaphore)

This shape indicates a space, usually between words. The same shape is also used for Rest (Flag Semaphore) & Ready (Flag Semaphore).
More Details - General Nautical Terminology Spar
Any long, sturdy pole or beam used on a ship to support sails, rigging, or other equipment. Spars are typically made of wood, metal, or composite...
More Details - General Nautical Terminology Speed Made GoodThe speed made good over the ground; that is , the boat speed corrected for tidal stream and leeway
- General Nautical Terminology, Navigation Speed Over Ground (SOG)
The actual velocity of a vessel relative to the Earth's surface, accounting for the effects of currents, tides, and other environmental...
More Details - General Nautical Terminology, Navigation Speed Through Water (STW)
The velocity at which a vessel moves relative to the water it is travelling through, excluding the effects of current or tidal flow.
Speed...
More Details - General Nautical Terminology Spill WindTo ease the sheets so that the sail is only partly filled by the wind, the rest being spilt
- General Nautical Terminology Spinnaker
A large, lightweight, and often colourful sail designed for use when sailing downwind, typically set forward of the mainsail to maximise speed...
More Details - General Nautical Terminology, Parts of a Boat Spinnaker Pole
A spar used on sailing vessels to control one clew of a spinnaker sail when sailing downwind.
A spinnaker pole is a key piece of equipment...
More Details - General Nautical Terminology SpitA projecting shoal or strip of land connected to the shore
- General Nautical Terminology Splice
A method of joining two ropes or lines by interweaving their strands to form a strong, secure connection.
A splice is a fundamental technique...
More Details - General Nautical Terminology Sportbootführerschein (SBF)
A German boating licence required for operating recreational motorboats and sailing vessels above certain power or length limits in German...
More Details - General Nautical Terminology Sportbootführerschein Binnen (SBF Binnen)
A German boating licence required for operating recreational motorboats and sailing vessels on inland waterways.
The Sportbootführerschein...
More Details - General Nautical Terminology Sportbootführerschein See (SBF See)
A German boating licence required for operating recreational motorboats and sailing vessels with an engine of more than 15 horsepower in coastal...
More Details - General Nautical Terminology Sportküstenschifferschein (SKS)
A German recreational boating licence required for operating yachts under sail or power in coastal waters up to 12 nautical miles...
More Details - General Nautical Terminology Sports BoatSports boats are sailing vessels designed with one thought in mind - speed! There are many different classes (designs) of sports boats that often... More Details
- General Nautical Terminology, Parts of a Boat Spray Hood
A protective canvas or fabric structure, often supported by a metal frame, installed over the companionway of a boat to shield the cockpit and...
More Details - General Nautical Terminology, Parts of a Boat Spreaders
Horizontal or angled spars attached to a yacht's mast, used to hold the shrouds away from the mast and improve the stability and tension of the...
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