| Year | Date | Historical Events |
| 1964 | Dec 19 | Keel laid down at Portsmouth Naval Shipyard, Kittery, ME. |
| 1968 | Jun 8 | Launched. |
| | Aug 17 | Commissioned with LCDR. J.R. McDonnell in command. |
| 1969 | Aug 1 | Dolphin launched a torpedo from the deepest depth that one has ever been fired. (Exacxt date unknown) |
| 2002 | May 22 | While operating 100 miles off the coast of San Diego, CA., Dolphin was cruising on the surface, when a torpedo shield door gasket failed, and the boat began to flood. The flooding shorted electrical panels and started fires. |
| | May 22 | (Cont'd.) Chief Machinist's Mate (SS) John D. Wise Jr., realizing what needed to be done, dove into the 57-degree water of the flooded pump room. He ensured the seawater valves were lined up, allowing the de-watering to commence. |
| | May 22 | (Cont'd.) Once the valves were aligned, he remained in the pump room in order to keep a submersible pump from becoming clogged. His courageous efforts prevented the loss of the ship and crew. Wise received the Navy and Marine Corps Medal for his efforts. |
| | May 22 | (Cont'd.) After 90 minutes, Commander Stephen Kelety, Dolphin's commanding officer, ordered the crew of 41 and two civilian Navy employees to abandon ship. The Oceanographic Research ship McGaw was operating in the vicinity and immediately responded.
|
| | May 22 | (Cont'd.) The fire and flooding was beyond the ability of the crew to control so they were evacuated by small boat to McGaw after the submarine hatches had been secured. McGaw transported the crew to San Diego, CA.
|
| | May 23 | The Submarine Support Vessel Kellie Chouest towed Dolphin back to San Diego.
|
| 2005 | Jun 1 | Dolphin completed sea trials after undergoing a $50 million, 3 and a half year repair. Dolphin returned to her duties for 1 year. |
| 2006 | Sep 22 | Decommissioned |
| 2007 | Jan 15 | Struck from the Naval Register. |