December 4, 1993 PCU Hartford was christened in a ceremony at the Electric Boat Division of General Dynamics Corporation in Groton, Conn.; Mrs. Laura O'Keefe, wife of former Secretary of the Navy Sean O'Keefe served a the ship's sponsor.

December 10, 1994 The U.S. Navy's 57th of 62 Los Angeles-class attack submarines, SSN 768, was commissioned at Naval Submarine Base, New London, Conn.; Cmdr. George Kasten in command.

October ?, 2003 USS Hartford departed Naval submarine Base New London for a scheduled Mediterranean deployment.

October 25, The Hartford briefly touched bottom while it was traveling on the surface in shallow water east of Caprera, Sardinia, Italy.

December 16, SSN 768 returned to Norfolk Naval Shipyard in Portsmouth, Va., after making temporary repairs at the U.S. Naval Support Activity, La Maddalena, Sardinia, Italy.

January 16, 2004 Cmdr. Frank Cattani relieved Cmdr. William C. Stacia Jr. as CO of the Los Angeles-class fast-attack submarine USS Hartford during a change of command ceremony at the Norfolk Naval Shipyard's Dry Dock Club, Scott Annex.

April 29, Captain David E. Eyler turned over command of Submarine Squadron Four to Capt. Robert H. Perry during a change of command ceremony aboard the Hartford.

August 22, 2005 Thirty-four Sailors from USS Hartford and USS Jarrett (FFG 33) participated in a community relations project in Callao, Peru, Aug. 11. During their brief port visit, crew members worked in conjunction with Peruvian Naval Forces and U.S. Military Advisory Group to paint and repair a local school, Miguel Grau Seminario.

March 15, 2006 USS Hartford arrived in Portsmouth Naval Shipyard in Kittery, Maine, for maintenance work and systems upgrades. The overhaul is expected to cost $150 million and last 13 months.

July 10, 2008 The Improved Los Angeles-class attack submarine is currently participating in a COMPTUEX, as part of USS Iwo Jima Expeditionary Strike Group.

August ?, SSN 768 departed Groton, Conn., for a scheduled deployment to the U.S. Navy 5th Fleet AoR.

March 20, 2009 USS Hartford collided with USS New Orleans (LPD 18) about 1 a.m. in the strait of Hormuz. Fifteen aboard the submarine were injured but returned to duty. The amphibious transport dock suffered a ruptured fuel tank, which resulted in an oil spill of approximately 25,000 gallons of diesel fuel and the Hartford sustained damage to her sail. Both ships were heading to port and were going in the same direction when the incident occurred in the narrow strait.

April 14, Rear Adm. Michael J. Connor, commander of Task Force 54 and Submarine Group 7, relieved Cmdr. Ryan Brookhart of his duty as CO of USS Hartford because of a loss of confidence in his ability to command. Cmdr. Chris Harkins has assumed command of the ship. The submarine is currently in port of Manama, Bahrain.

May 21, The Hartford returned to Groton after a month-long escorted surface transit from Bahrain. In July, the sub will go to Electric Boat, which has been awarded a $15.8 million contract for advance planning to later restore it to "full service condition," according to a Defense Department release on Thursday. This planning work is expected to be completed by October.

May 23, Cmdr. Robert Dunn took command of USS Hartford in a ceremony at Naval Submarine Base New London.

July 8, Another $21.6 million contract has been awarded to Electric Boat for off-hull fabrication of the sail and retractable bow plane on the port side. The Hartford’s sail was partially torn from the hull, and it’s not clear if a completely new one will be required. The contract calls for the work to be complete by January 2010.

August 6, U.S. Navy awarded another $65.2 million contract to repair the Hartford. Electric Boat will install a hull patch and a bridge access trunk on the sub, along with a portside retractable bow plane and sail. The last two items were pre-fabricated under a previous $21.6 million contract. Workers will also perform selected maintenance on the sub.

April 1, 2010 U.S. Navy awarded $36.6 million contract to repair USS Hartford, bringing the total repair cost to $86.9 million. Though the contracts total $139.2 million, the company was able to do the work for less than estimated. The previous three contracts totaled $102.6 million, but most of those funds expired Oct. 1, the start of the new fiscal year.

February ?, 2011 USS Hartford returned to homeport after successfully passing its sea trials in January, completing the 18-month, $120 million worth, repair period.

August 26, SSN 768 departed NSB New London to avoid the approaching Hurricane Irene.

November 4, Cmdr. Steven Wilkinson relieved Cmdr. Robert Dunn as CO of the Hartford during a change-of-command ceremony at Groton.