Signalling & Communication
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TermDefinition
- General Nautical Terminology, Signals & Communication High Frequency (HF)
The radio frequency range between 3 and 30 megahertz (MHz), commonly used for long-range marine communications via skywave propagation.
High...
More Details - Flag Semaphore, Signals & Communication Letter H (Flag Semaphore)

This shape represents the Letter H (Flag Semaphore) and the Number 8 (Flag Semaphore).
- Morse Code, Signals & Communication Letter H (Morse Code)
International Morse Code sequence representing the letter H.
- Phonetic Alphabet, Signals & Communication Hotel
Pronounced: hoh-TELL
The term for the letter H in the NATO Phonetic Alphabet.
- Flag / Pennant, Signals & Communication Code Flag India (I)

The International Maritime Signal Flag India.
Meaning
- Flag Semaphore, Signals & Communication Letter I (Flag Semaphore)

This shape represents the Letter I (Flag Semaphore) and the Number 9 (Flag Semaphore).
- Morse Code, Signals & Communication Letter I (Morse Code)
International Morse Code sequence representing the letter I.
- Phonetic Alphabet, Signals & Communication India
Pronounced: IN-dee-ah
The term for the letter I in the NATO Phonetic Alphabet.
- Flag / Pennant, General Nautical Terminology, Signals & Communication International Code of Signals (ICS)
A system of flags, codes, and symbols used by ships to communicate essential messages and ensure safety at sea, regardless of language...
More Details - Flag / Pennant, Signals & Communication International Maritime Signal Flags
A system of flags ships use to communicate messages, signals, or important information visually. Flags often represent letters, numbers, or...
More Details - Morse Code, Signals & Communication International Morse Code
A standardised system of encoding text characters as sequences of dots (short signals) and dashes (long signals) used for communication,...
More Details - Organisation, Signals & Communication International Telecommunication Union (ITU)
A specialised agency of the United Nations responsible for coordinating global telecommunication operations and services, including radio...
More Details - Flag / Pennant, Signals & Communication Code Flag Juliett (J)

The International Maritime Signal Flag Juliett.
Meaning
I am on fire and have dangerous cargo on board: keep well clear of me.
More Details
OR
I am... - Flag Semaphore, Signals & Communication Letter J (Flag Semaphore)

This signal is also used to transition from letters to numbers when communicating a message.
- Morse Code, Signals & Communication Letter J (Morse Code)
International Morse Code sequence representing the letter J.
- Did you know?, Phonetic Alphabet, Signals & Communication Juliett
Pronounced: JOO-lee-ETT
The term for the letter J in the NATO Phonetic Alphabet.
More Details - Flag / Pennant, Signals & Communication Code Flag Kilo (K)

The International Maritime Signal Flag Kilo.
Meaning
I wish to communicate with you.
More Details
If appended by a Numeral Pennant:
I wish to... - Phonetic Alphabet, Signals & Communication Kilo
Pronounced: key-loh
The term for the letter K in the NATO Phonetic Alphabet.
- Flag Semaphore, Signals & Communication Letter K (Flag Semaphore)

This shape represents the Letter K (Flag Semaphore) and the Number 0 (Flag Semaphore).
- Morse Code, Signals & Communication Letter K (Morse Code)
International Morse Code sequence representing the letter K.

