10B2 A
 When may a compulsory vessel not be allowed to leave port?
A. When the vessel has replaced a required piece of GMDSS-related equipment but its performance has not been verified or logged.
B. When the vessel is in an over-carriage condition.
C. When the vessel has arranged for both duplication of equipment and shore-based maintenance.
D. When the vessel is carrying only two licensed GMDSS Radio Operators and is capable of performing all required functions.
