Glossary
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TermDefinition
- Flag Semaphore, Signals & Communication Letter S (Flag Semaphore)

Flag semaphore indicating the letter S.
- Morse Code, Signals & Communication Letter S (Morse Code)
International Morse Code sequence representing the letter S.
- General Nautical Terminology SlideA metal or plastic fitting on the luff or foot of a sail running in a track on the mast or boom
- General Nautical Terminology Slip Lines
Ropes or lines used to temporarily secure a vessel to a dock or mooring point in such a way that they can be released from onboard without...
More Details - General Nautical Terminology Slipped Lines
The act of releasing a vessel's mooring lines in a controlled manner, allowing it to depart from a berth or dock without assistance from shore...
More Details - General Nautical Terminology Slipway
A sloped structure or ramp leading into the water, used for launching, retrieving, or repairing boats and ships.
A slipway, also known as a...
More Details - General Nautical Terminology SloopA small to mid-sized sailboat larger than a dinghy, with one mast bearing a main sail and head sail.
- General Nautical Terminology SlotGap between two sails.
- General Nautical Terminology, Navigation Small Vessel Electronic Chart Systems (SV-ECS)
Electronic navigation standards for commercial vessels less than 24m .
Equipment meeting the requirements of this performance standard is...
More Details - General Nautical Terminology, Signals & Communication SMCP
A set of internationally agreed-upon phrases used to ensure clear, concise, and unambiguous communication at sea, particularly between vessels...
More Details - General Nautical Terminology SnatchJerk caused by too short an anchor cable in a seaway; To take a turn quickly around a cleat, bollard or Samson post
- General Nautical Terminology Snug DownTo prepare for heavy weather by securing all loose gear
- General Nautical Terminology, Navigation 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 SOLAS
An international maritime treaty that sets minimum safety standards for ship construction, equipment, and operation. Its primary goal is to...
More Details - General Nautical Terminology, Safety SOLAS V
Chapter V of SOLAS (Safety of life at Sea) refers to the Safety of Navigation for all vessels at sea.
SOLAS V for pleasure craft
SOLAS V...
More Details - General Nautical Terminology Sole
Sea area of the Met Office Shipping Forecast. Covers Sole Bank in the eastern Bay of Biscay off the French coast.
From the Sole Bank, famed...
More Details - General Nautical Terminology, Parts of a Boat Sole boards
The flat, horizontal planks or panels that form the flooring of a boat's interior, typically installed over the bilge area to provide a stable...
More Details - General Nautical Terminology, Morse Code, Safety, Signals & Communication SOS
The universally recognised distress signal used in maritime communication to indicate an emergency requiring immediate assistance.
The German...
More Details - General Nautical Terminology SoundTo measure the depth of water
- General Nautical Terminology SoundingThe depth of water below chart datum

