7-15C2 D
 When may a compulsory vessel NOT be allowed to leave port?
A. When the vessel is in an over-carriage condition.
B. When the vessel has arranged for both duplication of equipment and shore-based maintenance.
C. When the vessel is carrying only two licensed GMDSS Radio Operators and is capable of performing all required functions.
D. When the vessel has replaced a required piece of GMDSS-related equipment, but its performance has not been verified or logged.
