Submarine of the United States
USS "Aspro" (SS/AGSS-309), a "Balao"-class submarine, was the first ship of the United States Navy to be named for the aspro, a fish found abundantly in the upper Rhône River. According to legend, the aspro comes to the surface only in bad weather, when other fishes take refuge near the bottom. This trait gave rise to its nickname, "Sorcerer."
Construction and commissioning.
"Aspro" was laid down on 27 December 1942 by the Portsmouth Navy Yard in Kittery, Maine; launched on 7 April 1943; sponsored by Mrs. William L. Freseman; and commissioned on 31 July 1943.
World War II.
"Aspro" held shakedown training in the waters off Portsmouth, New Hampshire; Newport, Rhode Island; and New London, Connecticut. After completing her tests and trial runs, she sailed on 17 September for Pearl Harbor. She arrived at Pearl Harbor on 18 October and immediately began preparations for her first war patrol which would take her to waters around Formosa and Sakishima Gunto.
First war patrol, November 1943 – January 1944.
She departed Hawaii on 24 November and made a brief fuel stop at Midway Atoll on 28 November before proceeding to her assigned area. On 15 December, she spotted a Japanese convoy consisting of one tanker, two freighters, and two escorts. The submarine fired torpedoes at the tanker and claimed a hit, but apparently failed to inflict serious damage.
Her next chance came on the night of 17–18 December, when she spotted a convoy of 15 Japanese ships. At 22:26, "Aspro" fired her stern tubes at a large tanker and an adjacent freighter. The submarine then made an end around run and attacked again. She claimed to have witnessed three vessels sinking, one severely crippled ship being taken under tow, and two other vessels having been damaged. "Aspro" escaped counterattack by the Japanese destroyer . With only one torpedo left, she returned to Midway on 1 January 1944, terminating her patrol after 39 days at sea. Postwar analysis failed to substantiate any of the sinkings, crediting her with damaging fleet tankers "Sarawak Maru" and "Tenei Maru".
During the course of the patrol, Stevenson had noticed his eyesight was growing progressively weaker. Therefore, after arriving at Midway, he underwent an eye examination and was disqualified for sea duty. He then suggested that his brother, Lt. Comdr. William A. Stevenson, relieve him. This recommendation was approved, and the change took place on 15 January 1944.
Second war patrol, January – March 1944.
Following a refit "Aspro" departed Midway on 15 January and proceeded to Pearl Harbor to undergo brief training before heading back to Midway on 3 February en route to her second patrol. This assignment took her to an area north of Truk, as part of Operation Hailstone. On 15 February at 11:21, she spotted a large Japanese submarine, which was later identified as . After a long surface pursuit, "Aspro" drew within range of "I-43", and at 22:23 fired four torpedoes. Her crew saw and heard an explosion, followed shortly by another. They then saw her target's bow rise as the victim sank by her stern at . This was "Aspro"'s first confirmed sinking.
On 17 February, she underwent a depth charge attack, but suffered no damage. "Aspro" torpedoed a freighter on 4 March, and the subsequent explosion shook the submarine violently. However, the Japanese vessel was merely damaged, not sunk. The rest of this patrol passed uneventfully, and "Aspro" retired to Pearl Harbor on 28 March after 54 days at sea.
Fourth war patrol, July – August 1944.
The submarine spent two weeks undergoing a refit before beginning her fourth patrol on 9 July. After pausing at Darwin, Northern Territory on 16 July to top off her fuel tanks, she proceeded to the South China Sea. Shortly thereafter, on 19 July, "Aspro" found a convoy of four medium-sized ships in company with five escort vessels off the west coast of Luzon and fired her torpedoes at 05:45 and heard a series of explosions. As a result of this, she claimed to have sunk one ship and damaged a second. The next day, the submarine fired torpedoes at a member of a three-ship convoy, but all apparently missed.
On 6 August, the submarine spotted two Japanese freighters and opened fire at 10:16. One of these ships was later seen to be listing 15 degrees to port, but still underway. The next day, "Aspro" attacked a 12-ship convoy. Her torpedoes hit a large freighter which sagged in the middle and started to settle. Following this action, "Aspro" continued her patrol uneventfully before returning to Fremantle on 18 August.
Fifth war patrol, September – October 1944.
Following this action, "Aspro" rendezvoused with and to form a wolf pack. On 7 October, "Hoe" spotted a large convoy consisting of about a dozen ships. At 04:55, "Aspro" fired four torpedoes at a freighter and witnessed the ship's sinking. {This was the Passenger-cargo "Macassar Maru" of 4,026 tons at 17.54N 119.57E}. Shortly thereafter, she terminated her patrol at Saipan on 14 October and then proceeded to Pearl Harbor where she arrived on 25 October.
Sixth war patrol, November 1944 – February 1945.
"Aspro" departed Pearl Harbor on 21 November and headed for Saipan. On 28 November, her No. 1 main generator threw a banding wire off the rotor, necessitating a replacement of the armature. Such repairs required her return to Pearl Harbor. 
After a week's work there, "Aspro" got underway on 13 December for her sixth war patrol. She was assigned lifeguard duties west of Taiwan to support carrier strikes for the week of 3 January 1945. While on her station, she attacked the amphibious assault ship Shintsu Maru. Two torpedoes hit and sank this target.
Her only other torpedo attack during the patrol occurred on 6 January, when she fired on two small freighters but missed. Her most important accomplishment of the patrol – which ended at Pearl Harbor on 11 February 1945 – was her rescue of four downed American aviators.
She was under the command of James H. Ashley, Jr. (class of 1934, USNA) who received the Navy Cross for this mission.
Seventh war patrol, June – August 1945.
Following this patrol, "Aspro" left Hawaii bound for the California coast. She entered Hunter's Point Naval Shipyard on 20 February and spent the next three months undergoing overhaul. This work ended on 31 May, and she sailed for Pearl Harbor to resume her combat duties.
Her seventh and final patrol began on 25 June and covered waters south of the Japanese home islands. On 8 July, she was assigned lifeguard duties in support of planes that had taken off from Iwo Jima for strikes on military targets in Japan. Beginning 20 July, she shifted position to cover carrier-based strikes against southeastern Honshū. Five days later, the submarine attacked and claimed to have sunk a Japanese tug with her final torpedo spread of the war.
On 3 August, she carried out a daring rescue of a downed aviator. "Aspro" entered Sagami Wan and came within five to six miles of the Japanese mainland to retrieve the pilot. Despite repeated Japanese air attacks, she succeeded in saving the American. Henry "Hank" Freeman USN (1922–2014) jumped into the waters after shooting down one of the Japanese bombers attacking the "Aspro" realizing the submarine was in the process of submerging during Japanese bomber attacks. After 2 hours she surfaced and picked up the wounded pilot and seaman. For his "Conspicuous Gallantry" Freeman was awarded a Silver Star and a Purple Heart for wounds he received.
Her patrol ended on 13 August, when she moored at Midway to commence a refit. It was here that "Aspro" received word of the Japanese capitulation which ended the war. On 1 September "Aspro" departed Midway, bound for the California coast. She arrived at San Francisco on 11 September for preservation work prior to being placed out of commission on 30 January 1946 and entering the Pacific Reserve Fleet in the Mare Island berthing area.
Post-War service.
"Aspro" was recommissioned on 6 July 1951 and, for the next two years, operated out of San Diego, her new home port, and performed routine work along the west coast. On 9 November 1953, she was placed in a reserve status and was berthed with the Mare Island group of the Pacific Reserve Fleet. "Aspro" was decommissioned on 30 April 1954.
The submarine was placed back in commission on 4 May 1957. She completed shakedown and was accepted into the active fleet on 8 June. She resumed her services to various units stationed along the west coast. This routine was broken first by the 1959 movie "Battle of the Coral Sea", starring Cliff Robertson, which was shot in part aboard "Aspro", then by a deployment to the western Pacific in mid-1959.
Upon her return to San Diego on 22 January 1960, "Aspro" underwent overhaul. On 1 July 1960, "Aspro" was redesignated AGSS-309. She then resumed her services along the west coast. On 7 September 1962, "Aspro" was decommissioned, and her name was struck from the Navy list on 9 October 1962. She was later sunk as a target by off San Diego, California on 16 November 1962.
Awards.
"Aspro" won seven battle stars for her World War II service.
References.
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