sentences:  Whenever necessary, the RVN could deploy the destroyer , the frigates , and , as well as the corvettes and to provide fire support.The RVN also relied on two transport ships, namely the and , to transport vital supplies and reinforcements to South Vietnamese forces on Spratly Island.On April 9, 1975, three VPN transport ships, disguised as fishing trawlers, began moving towards Southwest Cay in the Spratly Islands with members of the 126th and 471st Battalions all on board.