Question

What is the purpose of the MMSI number and how many figures is it composed of?

A. Maritime Mobile Service Identity; 9 figures.
B. Maritime Mobile Service Identifier; 7 figures.
C. Maritime Mobile Service Identity; 15 figures.
D. Maritime Mobile Service Identifier; 12 figures.

Answer 1

The MMSI number serves as a unique identifier for maritime communication systems and consists of 9 figures. Option A is the correct choice.

Step-by-step explanation:

The purpose of the MMSI number (Maritime Mobile Service Identity) is to provide a unique identifier for maritime communication, particularly for the use of digital selective calling (DSC), automatic identification systems (AIS), and certain types of satellite communications. An MMSI number is composed of 9 figures, which makes option A the correct choice: Maritime Mobile Service Identity; 9 figures.