Abbreviations
Marine Alphabet/Call sign
Messages
Ranks & Roles
Communication signals
100

IMO


International Maritime Organization

100

"ABCD"

Alpha Bravo Charlie Delta

100

"Man overboard! Man overboard!"

Distress call

100

Trainee officers or engineers who are learning and gaining practical experience while on board. They work under the supervision of experienced officers.

Cadet

100

This system is used for emergency communication. It incorporates various technologies like satellite, VHF, and MF/HF radios to enhance safety and ensure that vessels can send distress signals and receive assistance in emergencies.

The Global Maritime Distress and Safety System (GMDSS)

200

ETA

Estimated time of arrival

200

"PQRS9"

Papa Quebec Romeo Sierra Nine

200

"Injury on board, medical assistance needed urgently!"

Urgent call

200

In charge of meal preparation and the galley. Responsible for menu planning, food safety, and maintaining a clean and efficient kitchen.

Chief Cook

200

This code is employed for ship-to-ship and ship-to-shore communication, especially when using signal lamps or flashing lights. It is used for transmitting messages, position reports, or requests for information.

Morse code

300

SMCP


Standard Marine Communication Phrases

300

"WXYZ2"

Whiskey X-ray Yankee Zulu Two

300

"Secure cargo for heavy seas!"

Safety call

300

In charge of the ship's engineering department. Responsible for the maintenance and operation of the ship's machinery, engines, and systems. Ensures that the ship's propulsion and electrical systems are running smoothly.

Chief Engineer

300

Larger vessels often use this signal, in addition to horns and whistles, to emit distinctive sound signals. These signals can be heard at greater distances and are used to alert nearby vessels to their presence and movements.

Sirens

400

MMSI

Maritime Mobile Service Identity

400

"TANGO33"

Tango Alpha November Golf Oscar Three Three

400

"Fire, fire, fire in the engine room!"

Distress call

400

The highest-ranking officer on board the ship. Responsibilities include overall command, navigation, safety, and decision-making. The captain is responsible for the ship's crew, cargo, and the vessel's safe operation.

Master or Captain

400

These lights are used at night or in reduced visibility to indicate a ship's status, direction of travel, and size. They help vessels avoid collisions by providing information about the type and behavior of other vessels.

Vessel navigation lights

500

GMDSS

Global Maritime Distress and Safety System

500

"FOXTROT21"

Foxtrot Oscar X-ray Tango Romeo Oscar Two One

500

"Fuel leak detected, urgent action required!"

Urgency call

500

Second-in-command to the captain. Responsible for navigation, cargo operations, safety drills, and supervising the crew. In the absence of the captain, the chief officer assumes command.

Chief Officer or First Mate

500

These are used for various purposes, including indicating a vessel's nationality, affiliation with specific organizations (e.g., yacht clubs), and conveying messages during maritime events and ceremonies.

Flags and pennants

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