* U-boats that fired torpedo or used the deck gun

The convoy ZG-36 left Cristobal for Guantanamo on 3 July 1943, consisting of eight merchants with six escorts. The ships were attacked by U-759 east of Jamaica in a submerged daylight attack on 6 July, which torpedoed the Poelau Roebiah in station #31. The periscope of the U-boat was spotted by near the lifeboats of the ship and subsequently attacked with depth charges from an aircraft and USCGC Bronco, which then stood by the torpedoed ship until it sank, picked up most of the survivors and landed them at Kingston, Jamaica. USS PC-470 and USS PC-1253 remained in the vicinity to keep the U-boat submerged for some hours, the latter picking up 24 survivors before the patrol craft followed the convoy to Guantanamo, arriving on 7 July.