Coast Guard Test Coast Guard Communications 2

Question 1

What is an MMSI number and why is it important?

Accepted Answer

A 9-digit Maritime Mobile Service Identity used to identify a vessel in DSC and AIS transmissions

Answer

An MMSI is a unique 9-digit number assigned to a vessel's radio, used in DSC distress calls and AIS transmissions, allowing the Coast Guard to identify the vessel instantly.

Question 2

What is AIS and what information does it broadcast?

Accepted Answer

Automatic Identification System; broadcasts vessel identity, position, course, speed, and other data

Answer

AIS (Automatic Identification System) automatically broadcasts a vessel's identity, position, speed, course, and other data to nearby vessels and shore stations.

Question 3

When is a ship station radio license required for a US vessel?

Accepted Answer

When the vessel travels to foreign ports, carries more than 6 passengers for hire, or is required by federal law

Answer

A ship station license is required for US vessels operating in foreign waters, carrying passengers for hire, or when otherwise required by law; pleasure boats in US waters only are generally exempt.

Question 4

What is the purpose of the Global Maritime Distress and Safety System (GMDSS)?

Accepted Answer

To ensure vessels can send and receive distress alerts and safety information worldwide

Answer

GMDSS is an internationally agreed-upon set of safety procedures, equipment, and communication protocols ensuring that distress alerts and safety information reach rescue authorities worldwide.

Question 5

What radio watch must all vessels equipped with a VHF radio maintain while underway in US waters?

Accepted Answer

Continuous watch on Channel 16

Answer

Federal regulations require all vessels equipped with VHF radios to maintain a continuous watch on Channel 16 while underway, except when actually communicating on another channel.

Coast Guard Practice Test

Coast Guard Practice Test

Coast Guard Test Coast Guard Communications 2