sentences:  The loss of Southwest Cay and Sand Cay, in combination with the defeats suffered by the ARVN on the mainland, placed the RVN in a complex and difficult position.As a result, at 8.45 pm on April 26, 1975, RVN ships in the Spratly Island area were ordered to evacuate the ARVN 371st Local Battalion and withdraw from Namyit and Sin Cowe.While the RVN were preparing to withdraw from Spratly Island, VPN reconnaissance units sent reports back to Hanoi, informing the naval command of RVN ships leaving their positions in Namyit and Sin Cowe.