Signalling & Communication
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TermDefinition
- Morse Code, Signals & Communication Letter B (Morse Code)
International Morse Code sequence representing the letter B.
- Phonetic Alphabet, Signals & Communication Bravo
Pronounced: BRAH-voh
The term for the letter B in the NATO Phonetic Alphabet.
- General Nautical Terminology, Signals & Communication Call Sign
A unique identifier assigned to a vessel or maritime station for communication purposes, typically used in radio transmissions.
A call sign is...
More Details - Flag Semaphore, Signals & Communication Cancel--Disregard (Flag Semaphore)

Cancel (or Disregard) informs the receiver to disregard the previous message or cancel the signalling. There is no specific attachment to...
More Details - Flag / Pennant, Signals & Communication Code Flag Charlie (C)

The International Maritime Signal Flag Charlie.
Meaning
Affirmative.
If appended with a Numeral Pennant, a Magnetic Bearing. - Phonetic Alphabet, Signals & Communication Charlie
Pronounced: CHAR-lee
The term for the letter C in the NATO Phonetic Alphabet.
- Flag Semaphore, Signals & Communication Letter C (Flag Semaphore)

This shape represents the Letter C (Flag Semaphore) and the Number 3 (Flag Semaphore).
- Morse Code, Signals & Communication Letter C (Morse Code)
International Morse Code sequence representing the letter C.
- Flag / Pennant, Signals & Communication Code Flag Delta (D)

The International Maritime Signal Flag Delta.
Meaning
I am manoeuvring with difficulty.
If appended with a Numeral Pennant, a Date. - Phonetic Alphabet, Signals & Communication Delta
Pronounced: DEL-ta
The term for the letter D in the NATO Phonetic Alphabet.
- General Nautical Terminology, Safety, Signals & Communication Digital Selective Calling (DSC)
An automated VHF and MF/HF radio communication system used in maritime environments to send distress alerts, establish contact, and exchange...
More Details - Flag Semaphore, Signals & Communication Letter D (Flag Semaphore)

This shape represents the Letter D (Flag Semaphore) and the Number 4 (Flag Semaphore).
- Morse Code, Signals & Communication Letter D (Morse Code)
International Morse Code sequence representing the letter D.
- Phonetic Alphabet, Signals & Communication Echo
Pronounced: ECK-oh
The term for the letter E in the NATO Phonetic Alphabet.
- Flag / Pennant, Signals & Communication Code Flag Echo (E)

The International Maritime Signal Flag Echo.
Meaning
- 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.
- 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.
- Flag / Pennant, Signals & Communication Code Flag Foxtrot (F)

The International Maritime Signal Flag Foxtrot.
Meaning
I am disabled; communicate with me.

