| Year | Date | Historical Events |
| 1942 | Mar 20 | Keel laid down by the Portsmouth Naval Shipyard, Kittery, ME. |
| | Aug 15 | Launched. |
| | Oct 24 | Commissioned with LCDR. C.O. Triebel in command.
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| 1943 | Mar 3 | After shakedown training off the New England coast, Snook departed New London and set sail for the Pacific. |
| | Apr 11 | Following a 12-day stopover at Pearl Harbor, HI. Snook put to sea and headed for the Yellow Sea and East China Sea for her first war patrol. |
| | May 5 | Snook sighted two freighters standing out of Dairen and took up the chase. She trailed both until after nightfall, then let go with a spread of 3 torpedoes that quickly sank the Kinko Maru. |
| | May 5 | (Cont'd.) Then opened fire with her guns, forcing the submarine to race out of range. Snook quickly returned to the action, however, firing 3 torpedoes, with 1 hit amidships, that sent Daifuku Maru to the bottom. |
| | May 5 | (Cont'd.) The lead freighter continued on, oblivious to the fate that had befallen her companion, until someone on the sinking ship sounded a whistle. At that point, the freighter began a series of frantic maneuvers to dodge two of Snook's torpedoes. |
| | May 7 | Snook began quickly closing a convoy. She launched 4 torpedoes, followed by 3 others 5 minutes later. Amid a din of explosions, the 4,363 ton cargo ship Hosei Maru was mortally wounded and several other ships were possibly damaged. |
| | May 13 | Snook destroyed an armed trawler. |
| | May 16 | Snook destroyed an armed trawler. |
| | May 23 | Snook terminated her 1st patrol at Midway Island. |
| | Jun 9 | Snook set sail from Midway Island for her 2nd war patrol and headed for the waters off the Ryukyu Islands. |
| | Jun 24 | Snook closed a 6 ship convoy escorted by 2 destroyers, fired 2 torpedoes at a large tanker, and heard 2 hits as she went deep and rigged for silent running to avoid the patrolling escorts. |
| | Jun 24 | (Cont'd.) Coming back up to periscope depth, she found a destroyer guarding the crippled ship and was prevented from a second try by overhead aircraft.
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| | Jul 3 | Shortly before midnight, Snook made radar contact with another enemy convoy. |
| | Jul 4 | Early in the morning, she sent a spread of 6 torpedoes on their way and was rewarded with hits that sank the cargo ships Koki Maru and Liverpool Maru and severely damaged Atlantic Maru. |
| | Jul 18 | Snook returned to Pearl Harbor, HI. from her second patrol |
| | Aug 18 | Snook got underway from Pearl Harbor, HI. for her 3rd war patrol. |
| | Aug 30 | Snook arrived off Marcus Island to take reconnaissance photographs and stand lifeguard duty for the carrier airstrikes of 1 September. Following the airstrikes, the submarine resumed patrol and headed for the East China Sea. |
| | Sep 13 | In the early morning darkness, Snook torpedoed and sank the 9,650 ton transport Yamato Maru. |
| | Sep 22 | Snook intercepted a Japanese ship departing Dairen and quickly sent the 715 ton cargo ship Katsurahama Maru to the bottom. |
| | Oct 8 | Snook terminated her 3rd patrol at Pearl Harbor, HI. |
| | Oct 22 | Snook departed Pearl Harbor, HI. on her 4th war patrol in a coordinated attack group with sister ships Pargo (SS-264) and Harder (SS-257) in the waters off the Marianas Islands. |
| | Nov 29 | Snook spent a productive day sinking the passenger-cargo ship Yamafuku Maru, the victim of 4 torpedo hits, and the cargo ship Shiganoura Maru, as well as damaging an escort ship. |
| | Dec 7 | Snook returned to Midway Island and was routed on to Pearl Harbor, HI. to end her 4th war patrol.
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| 1944 | Jan 6 | Snook cleared Pearl Harbor, HI. and headed for the Western Coast of Kyushu on her 5th war patrol. |
| | Jan 23 | While off the Bonin Islands, Snook torpedoed and sank the 3,120 ton converted gunboat Magane Maru. |
| | Feb 8 | Snook attacked a 13 ship convoy, firing a spread of 4 torpedoes for 3 hits. In this action, she sank the freighter Lima Maru, and heavily damaged the freighter Shiranesan Maru. |
| | Feb 14 | Snook quickly sank the freighter Nittoku Maru, with 1 torpedo hit amidships. |
| | Feb 15 | Snook sank the cargo ship Hoshi Maru Number Two. |
| | Feb 23 | Snook made a daring approach through a screen of 11 enemy escort ships. After firing 5 torpedoes, she observed 2 good hits which sank the passenger-cargo ship, Koyo Maru. |
| | Mar 6 | Snook terminated her 5th patrol at Pearl Harbor, HI. and continued to Hunters Point Navy Yard for a major overhaul.
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| | Jul 12 | After 5 productive war patrols, Snook came upon hard luck on her 6th. Although she fired at and missed 2 freighters, the remainder of the patrol was devoid of worthwhile targets. |
| | Aug 14 | Snook returned to Midway Island. |
| | Sep 25 | Snook's 7th war patrol was conducted in Luzon Strait and the South China Sea. Snook stopped at Saipan for repairs. |
| | Oct 4 | Snook continued her patrol. |
| | Oct 23 | Snook contacted an enemy convoy. Within the next 24 hours, Snook sent 3 enemy vessels to watery graves. The first was the passenger-cargo ship Shinsei Maru Number 1. After evading 2 escorts, the submarine resumed the chase. |
| | Oct 24 | Snook quickly returned to the convoy and let go with 5 bow torpedoes and observed the cargo ship, or "Hell ship", Arisan Maru sink beneath the waves, killing about 1,800 American prisoners of war. |
| | Oct 24 | The tanker Kikusui Maru was the next to be sent to the bottom after a torpedo hit disintegrated the entire after end of the ship. |
| | Nov 3 | Snook rescued a downed airman. |
| | Nov 18 | Snook returned to Pearl Harbor, HI. |
| | Dec 25 | Snook's 8th war patrol was conducted off the Kuril Islands. Her only sightings during this patrol were 2 Soviet vessels and a momentary contact with a small patrol craft which was quickly lost.
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| 1945 | Feb 17 | Snook terminated her 8th war patrol. |
| | Apr 8 | Snook was lost from unknown causes while conducting her 9th war patrol, in the South China Sea and Luzon Strait. 84 men lost. |