The Colorado (SSN 788) is the 15th Virginia-class attack submarine and the fourth United States Navy ship named for the state of Colorado. The contract to build her was awarded to General Dynamics Electric Boat division on December 22, 2008.

March 7, 2015 The keel for SSN 788 was laid down during a ceremony at GDEB’s Quonset Point facility in North Kingstown, R.I.

February 29, 2016 The Colorado finished the last major phase of its construction at the Electric Boat shipyard, after all pressure hull sections are joined to form a single unit.

December 3, The Pre-Commissioning Unit (PCU) Colorado was christened during an 11 a.m. EDT ceremony at the Electric Boat shipyard's assembly bay in Groton, Conn. Annie Mabus, daughter of the Honorable Raymond E. Mabus, Jr., (SECNAV), served as sponsor of the ship. Cmdr. Kenneth Franklin is the prospective commanding officer.

December 29, The Colorado recently moved from the hangar bay to Dry Dock #3 where she floated off for the first time.

August 19, 2017 PCU Colorado departed Electric Boat shipyard for a three-day underway to conduct Alpha sea trials; Underway for Bravo trials from Aug. 2?-30; Underway for acceptance trials on Sept. 1?.

September 21, General Dynamic's Electric Boat officialy delivered the future USS Colorado to U.S. Navy.

November 3, Cmdr. Gregory R. Koepp, II relieved Cmdr. Kenneth Franklin as CO of the SSN 788, during a change-of-command ceremony on board the sub at Naval Submarine Base New London.

December 20, The Colorado is currently moored at Pier 8S on Naval Submarine Base New London.

January 9, 2018 PCU Colorado departed homeport for routine operations off the coast of Florida; Moored at Trident Wharf in Port Canaveral, Fla., from Jan. 11-18.

February 28, The Colorado moored at Pier 6N on Naval Submarine Base New London after underway for routine operations.

March 17, USS Colorado was commissioned during an 11 a.m. EDT ceremony at Naval Submarine Base New London in Groton, Conn.

March 30, General Dynamics Electric Boat Corp. was awarded $14,7 million modification to a previously awarded contract (N00024-09-C-2104) for planning and execution of USS Colorado's Post Shakedown Availability (PSA). Work is expected to be completed by September.

November 16, USS Colorado completed a week-long acoustic trials off the coast of Port Everglades, Florida; Returned to Groton on Nov. 20.

January 3, 2019 The Colorado is currently moored at Pier 6S on Naval Submarine Base New London.

August 9, USS Colorado returned to Naval Submarine Base New London after underway for routine operations.

January 2?, 2020 SSN 788 moored at Valiant Jetty on Her Majesty's Naval Base (HMNB) Clyde in Faslane, Scotland; Underway on Jan. 25.

February 20, USS Colorado moored at Pier 17N on Naval Submarine Base New London following a maiden North Atlantic deployment. The sub traveled approximately 39,000 nautical miles and also made port calls to Haakonsvern, Norway.

March 6, Cmdr. Garth W. Storz relieved Capt. Jason M. Geddes as CO of the Colorado during a change-of-command ceremony at Dealey Center theater on Naval Submarine Base New London.

April 2, USS Colorado moored at Pier 17N on Naval Submarine Base New London after underway for routine operations.

September 28, The Colorado moored at Pier 17N on Naval Submarine Base New London after a 20-day underway in support of anti-submarine warfare (ASW) exercise Black Widow; Underway again from Nov. 16-1?.

December 15, USS Colorado returned to homeport after underway for routine operations.

From January 31- Feb. 1, 2021, USS Colorado conducted acoustic trials off the coast of Port Everglades, Florida; Returned home on Feb. 5.?

April 6, The Colorado moored at Pier 31S on Naval Submarine Base New London after underway for routine operations; Underway again on June ?; Brief stop off Groton on June 21; Returned home on July 10; Underway again on July 1?.

July 14, USS Colorado made a brief stop off the coast of Groton for personnel transfer; Returned home on July 18.?

August 2?, USS Colorado departed Groton for a scheduled North Atlantic deployment.

October 17, The Colorado moored at Her Majesty's Naval Base (HMNB) Clyde in Faslane, Scotland, for a week-long port call; Brief stop in Loch Long, Scotland, for personnel transfer on Dec. 17; Moored at Valiant Jetty on HMNB Clyde from Jan. 3-14, 2022.

March 13, USS Colorado moored at Pier 8N on Naval Submarine Base New London following a nearly seven-month deployment.

May ?, The Colorado departed homeport for routine operations; Moored at Trident Wharf in Port Canaveral, Fla., for a brief stop on May 24; Moored at Pier 17S in Naval Submarine Base New London on May 27.

August 5, Cmdr. David R. Beam relieved Cmdr. Garth W. Storz as CO of the Colorado during a change-of-command ceremony on board the sub at Pier 6N.

August ?, USS Colorado moved from Pier 6 to Pier 17S on Naval Submarine Base New London; Underway again on Oct. 25; Brief stop in Naval Station Mayport, Fla., for personnel transfer on Oct. 28; Brief stop off Groton on Nov. 10.

November 18, The Colorado made a brief stop off Electric Boat shipyard for personnel transfer; Moored at Pier 17S on Nov. 21; Underway again from Nov. 29- Dec. 8.

January 10, 2023 USS Colorado departed Naval Submarine Base New London for routine operations; Brief stop off Groton for personnel transfer on Jan. 13 and 20th; Moored at Pier 8N on Jan. 27; Underway again on Feb. 16.?

March 2, The Colorado moored at Trident Wharf in Port Canaveral, Fla., for a four-day port call; Moored at Trident Wharf again from March 6-7; Conducted acoustic trials off Port Everglades from March 8-9; Brief stop in Port Everglades for personnel transfer on March 9.

March 13, USS Colorado moored at Pier 32S on Naval Submarine Base New London; Underway again on April 21; Moored at Pier 17S on June 9.

June 28, USS Colorado departed Groton for a scheduled North Atlantic deployment.

July 21, The Colorado moored at Grotsund Terminal in Port of Tromso, Norway, for a three-day visit; Moored at Berth 3, Pier 1 on Naval Station Rota, Spain, from Dec. 2-8.

December 19, USS Colorado moored at Pier 6S on Naval Submarine Base New London following a nearly six-month deployment.

February 8, 2024 USS Colorado moored at Pier 32N on Naval Submarine Base New London after underway for routine operations; Underway for a homeport change to Pearl Harbor, Hawaii, on March 15.

April 17, USS Colorado moored at Wharf S1B in its new homeport of Joint Base Pearl Harbor-Hickam for the first time.

May 1, The Colorado moored at Wharf W5, Naval Magazine Lualualei for ammo offload; Underway again on May 3; Moored at Wharf B3 in Pearl Harbor Naval Shipyard on May ?; Entered the Dry Dock #2 on June 12.

August 23, Cmdr. Justin Reeves relieved Cmdr. David R. Beam as CO of the SSN 788 during a change-of-command ceremony on board the Battleship Missouri Memorial.