9D05 D
 GMDSS requirements for radar transponders are:
A. One for cargo ships between 300 and 500 tons.
B. At least one unit on any kind of ship.
C. One for each side of passenger ships and cargo ships of 500 tons upwards.
D. One for cargo ships between 300 and 500 gross tons and one on each side of passenger and cargo ships of more than 500 tons.
