SS-274 General Specifications
Class: Gato-class submarine
Complement: 6 Officers and 54 Enlisted
Displacement: 1525 tons
Length: 311 feet 9 inches
Beam: 27 feet 3 inches
Draft: 17 feet 0 in
Range: 11 000 Nautical Miles
Final Disposition: Sold for scrap 17 August 1972
USS ROCK (SS-274)
Rock (SS-274) was laid down by the Manitowoc Shipbuilding Co.
23 December 1942; launched
20 June 1943; sponsored by Mrs. B. O. Wells
and commissioned 26 October 1943
Comdr. John Jay Flachsenhar in
After a month of intensive training in Lake Michigan
passed through the Chicago Drainage Canal to Lockport
There she entered a floating drydock for her voyage down the
Mississippi River. She arrived in New Orleans on 29 November 1943
and got underway 6 days later for Panama
she received further training before sailing for Pearl Harbor
on 2 January 1944. Following voyage repairs Rock departed
from Pearl Harbor for her first war patrol on 8 February 1944.
On 29 February 1944
Rock contacted a large enemy convoy
enroute to Truk. Detected while making a night surface approach on the convoy
she fired a spread of four torpedoes
from her stern tubes at a closing enemy destroyer without
scoring. Then illuminated by the destroyer's searchlight
under fire from the surface ship's 5-inch guns
For 4 hours she underwent depth charge attacks
but survived. That night she surfaced and found that her periscopes
were excessively damaged and that her bridge had been
riddled with shrapnel. The damage necessitated a return to
Pearl Harbor for repairs.
Rock began her second war patrol on 4 April 1944
after 34 days in the Bungo Suido
and Sagami Wan area without action
she returned to Majuro
where she was refitted by Sperry (AS-12).
in company with Tilefish and Sawfish
Majuro on 22 June 1944
in a coordinated attack group to
patrol the Luzon Strait. At dawn on 19 July Rock attacked
a Japanese convoy of seven large ships and three escorts
firing 10 torpedoes
six of which exploded. But
as she immediately dove to escape a depth-charge attack
not observe their effect. Two days later Rock contacted another enemy convoy consisting of six large ships and four
escorts. She fired four torpedoes
two of which seemed to hit
again Rock was forced down by depth charges and unable
to assess damage to her targets. During the remainder of her
time on station
Rock weathered a severe typhoon and witnessed the sinking of a Japanese submarine by Sawfish. On
27 July she headed toward Pearl Harbor.
Rock departed Pearl Harbor on 9 September 1944
for the South China Sea for her fourth patrol. On 26 October
she scored three hits on a tanker
her only sinking
Takasago Maru No. 7
accompanied by three escorts. On 27
she fired nine torpedoes at Darter
to prevent her salvage by the Japanese. Three
of the torpedoes were hits. This patrol ended when Rock
departed the area and sailed for Fremantle
On 14 December 1944
Rock departed Fremantle on her
fifth patrol. The only event of note during this 64-day patrol
was the rescuing of a downed pilot from Lexington.
At the start of her sixth patrol
7 March to 4 May 1945
she picked up 15 merchant seamen
adrift in a life raft for 32
and landed them at Exmouth. Continuing northward
the next day
Rock was bombed by an aircraft and that night
she was struck by a dud torpedo. Neither attack caused any
critical damage. In a night attack on 27 March
on an enemy destroyer escort without success. On 18 April
she joined Tigrone in bombarding Batan Island to leave the
Japanese radio station in ruins. Rock then turned toward
Saipan to complete a 54-day patrol.
From the Marianas the submarine headed for the United
arriving at Hunter's Point
14 May for
overhaul. She sailed for Pearl Harbor 7 August 1945
with the cessation of hostilities was ordered east.
Officially credited with damaging 42
282 tons of enemy
shipping during her six war patrols
Rock participated in
Navy Day celebrations at New Orleans
then proceeded to
New London where she began inactivation in November 1945.
She was decommissioned 1 May 1946 and was berthed as a
unit of the Atlantic Reserve Fleet.
In early 1951 Rock was towed from New London to the
Philadelphia Naval Shipyard
where she was converted to a
radar picket submarine by bisecting her at the forward bulkhead of the control room and inserting a 30-foot section between the control room and the forward battery to house the
new CIC and the majority of her new electronic equipment.
Reclassified SSR-274 on 18 July 1952
at Philadelphia 12 October 1953. After a short period of
training with SubRon 6 off the Virginia Capes
she proceeded to San Diego to join SubRon 5. On 23 July 1954
departed San Diego for the western Pacific area and a 6-month
tour on the Taiwan Strait Patrol. She subsequently alternated
deployments to WestPac with operations off the Pacific coast.
She made 6-month deployments to WestPac in 1956 and
during the winter of 1958-59.
On 31 December 1959 there no longer existed an operational
requirement for a radar picket submarine in the Fleet
on that date the Air Control Center was decommissioned and
Rock was redesignated AGSS
auxiliary general submarine.
Following operations off the Pacific coast and another overhaul
Rock again deployed to WestPac in November 1961.
She made subsequent 6-month deployments to WestPac in
Operating in the eastern Pacific during the first half of
Rock departed San Diego 11 July and conducted operations in support of fleet training in the Hawaiian operating
areas until steaming 16 August for the Pacific coast. Less than
a month later
on 13 September 1969
at Puget Sound Naval Shipyard. Struck from the Navy list
on the same day
she was designated for use as a target to
Rock earned four battle stars for World War II service.
[Note: The above USS ROCK (SS-274) history may or may not contain text provided by crew members of the USS ROCK (SS-274) or by other non-crew members and text from the Dictionary of American Naval Fighting Ships]