USS Seawolf (SS-197), the second submarine of the United States Navy named for a solitary fish with strong, prominent teeth and projecting tusks that give it a savage look, was launched 15 August 1939, and commissioned 1 December 1939. On her first fourteen patrols, she sank 27 enemy ships and damaged 13 for totals
of 108,600 tons and 69,600 tons, respectively.
On the day the war began she started patrolling in the vicinity of northern
Luzon, but returned with no damage to her credit. Her second patrol was
the passage from Manila to Port Darwin[?] and Seawolf did not
meet any enemy ships. On her third patrol Seawolf transported a
cargo of .50-caliber antiaircraft ammunition to Corregidor in January
1942 and then took passengers from there to Surabaya. Patrolling
the vicinity of Lombok Straits[?] for her fourth run, Seawolf sank
a transport and damaged three light cruisers, two transports and a
freighter. She received the Navy Unit Commendation[?] for this patrol.
Returning to the Philippine area for her fifth patrol, Seawolf
sank a freighter. In the Makassar Strait[?] for her sixth patrol,
Seawolf sank a tanker and a freighter-transport, while she damaged another tanker.
On her seventh patrol, she made the passage from Fremantle to
Pearl Harbor, patrolling at Davao Gulf, Palau, and Yap
enroute. She sank the Japanese freighter-transport Sagami Maru
40 miles inside the mouth of Davao Gulf on 3 November 1942.
In addition, Seawolf sank a large freighter, a tanker, two sampans,
and, on 23 April 1943, Patrol Boat Number 39, a converted Japanese
destroyer. Going to an area off the China coast north of Formosa
for her ninth patrol, Seawolf sank a freighter-transport and a
sampan, and damaged a destroyer escort.
Seawolf's tenth patrol was in the East China Sea[?] in August and
September 1943; here she sank three large freighters and two sampans,
while she damaged a third sampan. She conducted her eleventh patrol in the
South China Sea and sank a large freighter-transport and an unidentified
ship, and damaged a freighter. In the East China Sea north of Formosa,
Seawolf sank a freighter-transport, three freighters and damaged
three more freighters on her twelfth war patrol. Seawolf's mission
on her thirteenth patrol was a photographic reconnaissance of Palau.
She also rescued two downed aviators during an U.S. carrier air raid there.
On her fourteenth patrol, Seawolf delivered cargo to guerrilla activities in the Philippines.
Seawolf began her 15th and final patrol leaving Brisbane on 21 September 1944, under the command of Lieutenant Commander
A.M. Bontier, and arrived at Manus on 29 September. Leaving Manus on
the same day, she was directed to carry certain stores and Army personnel
to the east coast of Samar.
On 3 October Seawolf and USS Narwhal[?]
exchanged SJ radar recognition signals at 0756. Later the same day an
enemy submarine sank
USS Shelton (DE-407)[?]. Since there were four friendly
submarines in the vicinity of this attack, they were directed to give their
positions and the other three did, but Seawolf was not heard from.
On 4 October, Seawolf again was directed to report her position,
and again she failed to.
USS Rowell (DE-403)[?] and an aircraft attacked a
submarine in the vicinity of the attack on Shelton[?],
having at that time no knowledge of any friendly submarines in the area,
and it was thought that Seawolf must be held down by these
antisubmarine activities. It is possible that Seawolf was the
submarine attacked.
The report from Rowell[?] indicates that an apparently
lethal attack was conducted in conjunction with a plane which marked the
spot with dye. Rowell[?] established sound contact on
the submarine, which then sent long dashes and dots which
Rowell[?] stated bore no resemblance to the existing
recognition signals. After one of the several hedgehog attacks a small
amount of debris and a large air bubble were seen. It has been established
that the Japanese submarine RO-41[?] sank Shelton[?]
on 3 October, and was able to return to Japan.
In view of the above facts, and the fact that there is no attack listed in
the Japanese report of antisubmarine attacks which could account for the
loss of Seawolf, it is possible that she was sunk by friendly forces
in an antisubmarine attack on 3 October 1944. It is also possible
that she was lost due to an operational casualty or as a result of an
unrecorded enemy attack. 62 officers and crew, and 17 Army passengers were lost.
See USS Seawolf for other submarines of this name.
General Characteristics