Glossary
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TermDefinition
- General Nautical Terminology, Navigation Electronic Navigation Chart (ENC)
A digital database of maritime chart information designed for use with Electronic Chart Display and Information Systems (ECDIS) to support safe...
More Details - Flag Semaphore, Signals & Communication Letter E (Flag Semaphore)

This shape represents the Letter E (Flag Semaphore) and the Number 5 (Flag Semaphore).
- Morse Code, Signals & Communication Letter E (Morse Code)
International Morse Code sequence representing the letter E.
- General Nautical Terminology Emergency Position Indicating Radio Beacon (EPIRB)
A safety device used in maritime emergencies to transmit a distress signal and location to search and rescue authorities via satellite...
More Details - General Nautical Terminology, Navigation ENC
A digital database of maritime chart information designed for use with Electronic Chart Display and Information Systems (ECDIS) to support safe...
More Details - General Nautical Terminology Ensign
A flag that denotes the nationality of a vessel, typically flown at the stern of a ship or boat.
An ensign is a crucial part of maritime...
More Details - General Nautical Terminology, Navigation EP
The approximate location of a vessel determined by dead reckoning, and accounting for external factors such as wind (Leeway) and Tide.
An...
More Details - General Nautical Terminology EPIRB
A safety device used in maritime emergencies to transmit a distress signal and location to search and rescue authorities via satellite...
More Details - Flag Semaphore, Signals & Communication Error (Flag Semaphore)

Waving both flags up and down indicates an error in the communication.
- Flag Semaphore, Signals & Communication Error (Flag Semaphore)


Repeated eight times, Letter E (Flag Signal) indicates an error.
- Courses, RYA Essential Navigation and SeamanshipThe RYA Essential Navigation and Seamanship course is a shore-based program that introduces basic navigation and safety skills. Topics include... More Details
- General Nautical Terminology, Navigation Estimated Position (EP)
The approximate location of a vessel determined by dead reckoning, and accounting for external factors such as wind (Leeway) and Tide.
An...
More Details - General Nautical Terminology, Navigation Estimated Time of Arrival (ETA)
The predicted time at which a vessel is expected to reach a specific destination, based on current speed, course, and environmental...
More Details - General Nautical Terminology, Navigation ETA
The predicted time at which a vessel is expected to reach a specific destination, based on current speed, course, and environmental...
More Details - General Nautical Terminology, Weather (Meteorology) Etesians
Strong, dry north to north-easterly katabatic winds that blow seasonally over the Aegean Sea during the summer months.
The Etesians, also...
More Details - General Nautical Terminology, Weather (Meteorology) European Centre for Medium-Range Weather Forecasts (ECMWF)
A European intergovernmental organisation that provides medium-range weather forecasts for its member countries and the wider international...
More Details - General Nautical Terminology Even Keel
The balanced and stable positioning of a vessel in the water, where it is neither listing to one side nor pitching forward or aft.
An "even...
More Details - General Nautical Terminology Eye Splice
A permanent loop formed at the end of a rope by interweaving its strands back into itself.
An eye splice is a fundamental ropework technique...
More Details - General Nautical Terminology, Weather (Meteorology) Faeroes
Sea area of the Met Office Shipping Forecast. Covers the sea around the Faroe Islands in the North Atlantic.
Covering waters around the Faroe...
More Details - General Nautical Terminology, Navigation, Weather (Meteorology) Fair
A state in which the wind or weather conditions are favourable for navigation or sailing or to adjust or smooth the surface of a hull or...
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