"a second torpedo splits the ship in twain"

SUN 16 MAY 1943
Atlantic
Destroyer MacKenzie (DD-614) sinks German submarine U-182 west of Madeira Islands, 33°55'N, 20°35'W.

Spanish sailing ship Juan rescues 18 survivors from U.S. freighter James W. Denver torpedoed and sunk by German submarine U-195 in the North Atlantic on 11 April 1943; two of the ship's 42-man merchant complement perish of exposure.

USAAF crash boat spots boatloads of survivors (41-man merchant complement, 25-man Armed Guard and four passengers) of U.S. freighter Samuel Jordan Kirkwood (which had sunk on 16 May 1943 as the result of damage inflicted by German submarine U-195 the previous day) and tows them to Ascension Island.

Pacific
Submarine Grayback (SS-208) damages Japanese destroyer Yugure northwest of Kavieng, 01°00'S, 148°44'W.

U.S. freighter William K. Vanderbilt is torpedoed by Japanese submarine I-19 southwest of Suva, Fiji Islands, 18°41'S, 175°07'E, and abandoned by the 41-man merchant complement. The 16-man Armed Guard remains on board to the last, but abandons after a second torpedo splits the ship in twain. I-19 then fires upon one lifeboat and two rafts, and questions the ship's master before departing; throughout the ordeal only the ship's chief engineer is killed (see 17 May 1943).