USS Trout (SS-202) was the fifth Tambor-class submarine commissioned in the United States Navy, serving in the Pacific from 1941 to 1944. She received 11 battle stars for World War II service and Presidential Unit Citation for her second, third, and fifth war patrols. Trout also delivered ammunition to the besieged American forces on Corregidor and brought out 20 tons of gold bars and silver pesos from the Philippine currency reserve to Pearl Harbor. During 1941, she was used as a target by a series of tests determining the vulnerability of submarines to depth charge attacks.
Trout is credited with sinking 12 enemy ships for 37,144 tons according to JANAC records. During her first ten war patrols she made 32 torpedo attacks, firing 85 torpedoes, including 34 hits, five confirmed premature detonations, five confirmed duds, and 25 suspected duds. She was also involved in six battle surface actions and was attacked with depth charges eight times.
She was reported overdue on 17 April 1944 and presumed lost with all hands on her eleventh war patrol. Of the twelve Tambor-class submarines, only five survived the war.
Origins Trout was the first ship of the United States Navy to be named for the trout, any of certain small, fresh-water fishes, highly esteemed by anglers for their gameness, their rich and finely flavored flesh and their handsome (usually mottled or speckled) coloration. Her keel was laid down on 28 August 1939 by the Portsmouth Navy Yard in Kittery, Maine. She was launched on 21 May 1940 sponsored by Mrs. Walter B. Woodson, and commissioned on 15 November 1940 with Lieutenant Commander Frank Wesley "Mike" Fenno, Jr., as captain.
Initial operations On 2 July 1941, following "shakedown" operations along the east coast, Trout and sister ship departed New York City, bound for the Pacific. After transiting the Panama Canal and stopping at San Diego, California, the submarines arrived at Pearl Harbor on 4 August 1941, where she was assigned to Submarine Squadron 6 with others of her class.
Trout conducted training operations with Submarine Division 62 until 29 November when she departed Pearl Harbor to conduct a simulated war patrolAfter October 1941 Pacific Fleet submarines carried war shots with tubes flooded, and orders to fire if attacked. "Simulated" did not imply a training exercise but a defensive patrol. off Midway Island.
Wartime operations
1st patrol — America enters the war On her defensive station, Trout patrolled submerged during daylight to avoid detection by ships or aircraft. On the morning of 7 December, she received word of the Japanese attack on Pearl Harbor. That night, the surfaced submarine observed two destroyers shell Midway Island. She was about ten miles distant and proceeded toward the enemy ships at full speed, but they retired before she arrived. Frustrated in being unable to fire a shot, she continued her now-unrestricted war patrol until 20 December 1941 when Fenno returned the ship to Pearl Harbor.
2nd patrol — to the Philippines On 12 January 1942, Trout stood out of Pearl Harbor with 3500 rounds of 3" AAA ammunition to be delivered to the besieged American forces on Corregidor. She topped off with fuel at Midway on 16 January and continued westward. On 27 January, near the Bonin Islands, she sighted a light off her port bow, closed to of the vessel, and fired a stern torpedo which missed. She closed to , discovered that her target was a submarine chaser, and, as she had been warned to avoid small ships, resumed her course for the Philippines. On 3 February, Trout rendezvoused with PT-34 off Corregidor and was escorted through its minefields to its South Dock.
Trout unloaded her ammunition cargo, refueled, loaded two torpedoes, and requested additional ballast. Since neither sandbags nor sacks of concrete were available, she was given 20 tons of gold bars and silver pesos319 40-pound gold bars and 630 bags each containing 1,000 silver pesos. to be evacuated from the Philippines. The specie came from twelve Philippine banks emptied of their assets, absent the paper money, all of which had been burned to prevent it from falling into Japanese hands. She also loaded securities, mail, and United States Department of State dispatches before submerging shortly before daybreak to wait at the bottom in Manila Bay until the return of darkness. That evening, the submarine was loaded with more mail and securities before she was escorted to open water. Trout set a course for the East China Sea which she entered on 10 February.
That afternoon, Trout launched a torpedo at a freighter from a range of but missed. The submarine then closed the target before firing two more which both hit the freighter. Approximately 25 minutes later, her sonar heard four explosions that were the boilers of Chuwa Maru blowing up as she sank. That evening, Trout was returning through the Bonin Islands when she sighted a light. She changed course, closed the range to , and launched two torpedoes at the ship. Both missed. In the time that lapsed between firing the first and the second torpedo, an enemy torpedo passed down Trout’s port side. As the submarine went to , another torpedo passed overhead. Trout came up to periscope depth and fired a third torpedo at the target and blew it up. Sound picked up another ship running at full speed, but there was no opportunity to attack it. Trout was credited with sinking a small patrol ship of approximately 200 tons. When she reached Pearl Harbor on 3 March 1942, the submarine transferred her valuable ballast to the cruiser .
Trout received a Presidential Unit Citation for this patrol. Fenno received both the Navy Cross and Army Distinguished Service Cross, and all crew members were awarded the Army Silver Star by Hawaiian Department commanding general Delos C. Emmons in a shipboard ceremony on 18 March 1942.
3rd patrol — into Japanese waters The submarine's third war patrol, conducted from 24 March to 17 May 1942 took her to Japanese home waters. On 9 April, Trout was patrolling between Ichie-Zaki and Shioni-Misaki when she sighted two small cargo ships. She launched two torpedoes at each target, but all missed. The next day, she launched one torpedo at a small steamer and missed again. On 11 April, she attacked a large freighter with two torpedoes. One hit the target but did not sink it. Between 16 April and 23 April Trout provided cover for the Doolittle Raid task force. Finally, on 24 April, the submarine hit a 10,000 ton tanker with two torpedoes off Cape Shiono, and it headed for the beach. A sweep of the periscope showed a cargo ship going to the aid of the tanker. Trout launched one torpedo and missed. She then closed to and fired another torpedo that hit with a tremendous explosion. When last seen, the cargo ship, too, was heading for shallow water. Four days later, the submarine attacked a 1,000 ton patrol vessel or minesweeper with a torpedo which sank it in two minutes. On 30 April, Trout attacked two ships off Shimo Misaki but missed both. On 2 May, the submarine sank the 5014 ton cargo ship Uzan Maru. Two days later, she fired a spread of two torpedoes at what was thought to be a freighter. The first torpedo missed, but the second hit forward of the bridge, sinking the converted gunboat Kongōsan Maru. The submarine was then subjected to a six-hour depth charge attack before she could clear the area.
For this patrol Trout received her second Presidential Unit Citation and Fenno his second award of the Navy Cross.
4th patrol — Task Group 7.1 Trout stood out of Pearl Harbor on 21 May 1942, as a unit of Task Group 7.1, the Midway Island Patrol Group consisting of 12 submarines. Her station was south of the island as nine of the submarines were positioned fan-like to the west of Midway in preparation for the Japanese attack. At 08:12 on 4 June, Trout sighted a Japanese fighter plane preparing to attack from astern. She went deep and heard a series of light explosions. On 9 June, Trout passed through a large oil slick and some debris before rescuing two Japanese from a large wooden hatch cover. She returned to Pearl Harbor on 14 June without firing a torpedo and began a major refit that included installation of search radars and JP sonar in preparation for deployment to Australia. The Trout also carried two POWs (Chief Radioman Hatsuichi Yoshida and Fireman 3rd Class Kenichi Ishikawa) from the sunken Japanese cruiser Mikuma.
5th patrol — the South Pacific On 27 August,Trout, now under the command of Lt. Cdr. Lawson Paterson "Red" Ramage, proceeded to Australia via the Marshall and Caroline Islands. She began patrolling the southern approaches to Truk on 7 September and was detected by three patrol craft on 10 September, apparently triangulating her position using radar. Forced to go deep for one and a half hours, Trout was attacked by 45 depth charges. The next day, she sighted a large transport but escorts forced her to go deep and clear the area. On 21 September, the submarine fired three stern torpedoes at a naval auxiliary. The first torpedo broke the ship in half and the next two hit the aft section. The victim was subsequently identified as Koei Maru, a converted net tender of 900 tons. A week later, Trout picked up a carrier group consisting of an escort carrier, two cruisers, and two destroyers. The submarine closed to and fired a spread of five torpedoes. She heard two timed explosions and saw the carrier
slow, with smoke pouring out of her starboard side near the water line. Trout heard high-speed screws approaching and went to as a pattern of ten depth charges shook her severely.
On 3 October, with one week remaining in her patrol area, Trout approached to reconnoiter Otta Pass, the southern deepwater entrance to Truk Lagoon. Six miles west of South Islands, she came to periscope depth to obtain a navigational fix. Just as the periscope was lowered, there was a violent explosion close aboard that shook the ship violently. The entire crew was stunned by the shock. One man was thrown from his bunk, and another was knocked off his feet. Trout emergency dived to . As she passed on the way down, another bomb exploded without effect. Since both periscopes were out of commission, the submarine headed for Brisbane for emergency repairs and arrived at Capricorn Wharf, New Farm on 13 October 1942.
Trout received her third Presidential Unit Citation for this patrol.
6th patrol — the Solomon Islands Trouts sixth war patrol began on 26 October 1942 and took her to waters around the New Georgia Islands. On 13 November, she was patrolling north of Indispensable Strait when she was ordered to intercept the Kongō-class battleship en route to shell Henderson Field on Guadalcanal. On the morning of 14 November Trout located Kirishima and its escort force in the process of refueling but was unable to maneuver into an attack position. Stalking the force, Trout attacked when the Japanese came under air attack in the afternoon and fired a spread of five torpedoes with a depth setting of ; all missed or failed to detonate and she cleared the area. The patrol ended when the submarine returned to Brisbane ten days later.
After provisioning and off-loading her torpedoes, Trout departed Brisbane on 25 November for Fremantle, Western Australia, where her squadron was then based, arriving 2 December 1942.
7th patrol — Borneo On 29 December 1942, Trout stood out to sea to patrol the South China Sea off North Borneo. The submarine contacted a large tanker off Miri on 11 January 1943 and launched three torpedoes from a range of . The first two hit the target amidships but the third exploded prematurely. Four minutes later, there was a heavy explosion from the direction of the target. Since postwar examination of Japanese records shows no sinking, the damaged ship must have managed to limp back to port.