Glossary
Nautical chart abbreviations are like the secret code of the seas—except instead of buried treasure, they lead to rocks, buoys, and mysterious dashed lines that scream, 'Don’t sail here.' Learning them can feel like cracking a pirate’s encrypted diary, but don’t worry, matey! With clever tools, quirky mnemonics, and a splash of humour, we’ll help you go from 'What’s "FOUL" mean? to confidently navigating the “Wk” wrecks and “Fl G” flashes like a salty sea captain. Think of it as Rosetta Stone, but for avoiding sandbanks!
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TermDefinition
- Abbreviation, Light Characteristic Oc
A light with more light than dark (is on for longer than it is off).
Occulting refers to a type of navigational light in which the light is...
More Details - Abbreviation, Light Characteristic Occulting (Oc)
A light with more light than dark (is on for longer than it is off).
Occulting refers to a type of navigational light in which the light is...
More Details - General Nautical Terminology Ocean Data Acquisition System (ODAS)
The Ocean Data Acquisition System (ODAS) is a system used to collect, process, and transmit various types of oceanographic data. This system...
More Details - General Nautical Terminology ODAS
The Ocean Data Acquisition System (ODAS) is a system used to collect, process, and transmit various types of oceanographic data. This system...
More Details - Phonetic Alphabet Oscar
Phonetic alphabet letter O.
Meaning: The Oscar flag signals "Man overboard." Often seen on the top of a Danbouy MOB recovery...
More Details - General Nautical Terminology Overhand loop
A loop that crosses on top of the standing part of a rope when tying a knot.