At 22.50 hours (EWT) on 21 Oct, 1943, the Gulfbelle (Master Charles P. Wahl, lost) collided with the steam tanker Gulfland (Master Torger Olsen, lost) off Lake Worth Inlet, Florida in position 27°01N/80°01W while en route from New York to Houston, Texas in ballast. Both tankers burst into flames, due to the cargo of gasoline on the Gulfland. Of her complement of 47 crew members and 25 armed guards, only 16 (three badly burned) crew members and 5 (one badly burned) armed guards survived. On the Gulfland 34 crew members and two armed guards lost their lives. The fire was fought by an US Coast Guard fire fighting crew.
Gulfland was salvaged but declared a total loss. Gulfbelle was repaired at Jacksonville and returned to service as Poucou on 4 Aug, 1944. 1945 registered in Panama for A.G. Pappadakis.

Post-war:
1949 renamed Poukoulet. Broken up at Bruges in April 1960.

At 06.14 hours 3 Jul, 1942, the unescorted Gulfbelle (Master Charles P. Wahl) was hit by one torpedo from U-126, while zigzagging at 11 knots 21 miles north of Tobago. The torpedo struck on the starboard quarter, ripped a hole 40 feet square, wrecked the engine room (killing an oiler and the second assistant engineer) and caused the turbine to fall out of the ship.
The armed guards fired one round from the 5in gun, her only armament, at a range of 300 yards on the surfaced U-boat. The shell passed over U-126 which then immediately submerged. At this time most of the crew of eight officers and 33 men had abandoned the ship in three lifeboats, because they did not clearly understand the order from the master to stand by their abandon ship stations. The master, four crewmen and the eight armed guards at the gun remained on board. Two boats drifted away in the choppy seas and were picked up by HMS Warwick (D 25) (Cdr Y. McCleves, DSO, DSC, RNR). The crew in the #4 boat reboarded the ship later and were subsequently transferred to the same destroyer, which towed the tanker to Port of Spain, Trinidad.

The Gulfbelle was towed to Mobile, Alabama, arriving on 8 September. She was repaired and returned to service in July 1943.