USS Michigan is the second Trident Class Nuclear Powered Fleet Ballistic Missile Submarine and the third United States Navy vessel to bear the name of the state. Since arriving in Bangor March 16, 1983, the submarine has successfully completed 67 strategic deterrent patrols.

September 12, 1986 USS Michigan successfully launched two Trident I (C4) missiles during a Follow-on Operational Test.

July 29, 1993 USS Michigan Gold Crew successfully launched four Trident I missiles during a Follow-on CINC Evaluation Test. This was the last C4 test scheduled for the Pacific Test Range. All future C4 tests will be conducted on the Atlantic Test Range.

October 1, 1994 USS Michigan commenced the second Trident SSBN engineered overhaul (EOH). While Puget Sound Naval Shipyard managed the EOH, the site was relocated to Trident Refit Facility (TRF) Bangor, Wash. The EOH completed on June 7, 1995.

October 29, The Michigan (Gold) successfully launched a Trident I DASO missile during the post-EOH shakedown. The submarine completed strategic loadout and redeployed February 21, 1996.

SSBN 727 has been out of service since August 2003, for conversion to Guided Missile Submarine-Class (SSGN) at Puget Sound Naval Shipyard.

February 2, 2004 USS Michigan, commanded by Cmdr. Thomas Calabrese, departed Naval Submarine Base Bangor and entered the Puget Sound Naval Shipyard & Intermediate Maintenance Facility (PSNS&IMF) to commence Engineered Refueling Overhaul and eventual conversion from a fleet ballistic missile submarine to a guided-missile submarine. This process will include modifying the missile tubes and the interior compartments and upgrading the communications systems. Three other Ohio-class submarines - USS Ohio (SSGN 726), USS Florida (SSGN 728) and USS Georgia (SSGN 729) are being converted from SSBNs to SSGNs.

June 12, 2007 USS Michigan (SSGN 727), commanded by Cmdr. Terry Takats, returned to active servise in a ceremony held in Bremerton, Wash.

August 10, Capt. Dietrich H. Kuhlmann, III, (Blue) and Capt. Charles J. Doty (Gold) relieved Cmdr. Terry Takats as commanding officer of the Michigan during a ceremony at Naval Base Kitsap, Bangor’s Deterrent Park.

November 10, 2008 USS Michigan (Blue) departed homeport for a maiden deployment as a guided-missile submarine.

July 28, 2009 Capt. Jerry Logan relieved Capt. Dietrich H. Kuhlmann as CO of the Michigan (Blue) during a change-of-command ceremony at Polaris Point. The guided-missile submarine arrived in Guam July 24 for mid-deployment maintenance and a crew exchange.

November 17, Capt. Philip G. McLaughlin relieved Capt. Charles J. Doty as commanding officer of the Michigan (Gold) in a ceremony held at the Parche Submarine Memorial Park on Naval Station Pearl Harbor.

December 12, USS Michigan (Gold) returned to homeport after a 13-month underway period. While deployed the ship visited Singapore, Japan and South Korea. SSGN 727 will off-load the over 100 cruise missiles and 40 tons of weapons and explosives it carried on deployment, and then go directly into a four-month major maintenance period and dry-docking at Puget Sound Naval Shipyard.

June 28, 2010 USS Michigan (Blue) arrived in Busan, Republic of Korea, for a scheduled port visit. The ship departed Bangor, Wash., April 29 for its second SSGN deployment.

September 28, SSGN 727 pulled into Fleet Activities Yokosuka (FAY) for a routine port call.

November 20, USS Michigan (Gold) returned to Naval Base Kitsap-Bangor after a three-month underway period.

December 24, USS Michigan (Blue) arrived in Busan, ROK, for a routine port visit.

April 30, 2011 The guided-missile submarine pulled into Busan for another port call to Republic of Korea.

June 2, USS Michigan (Gold) returned to Bangor after completing a 13-month deployment.

June 8, The Michigan arrived at Naval Magazine Indian Island, Wash., to offload ammunition.

June 14, SSGN 727 arrived at Puget Sound Naval Shipyard to begin a major maintenance period.

July 15, Capt. James E. Horten relieved Capt. Jerry Logan as CO of USS Michigan (Blue) during a change-of-command ceremony at Naval Base Kitsap-Bangor's Deterrent Park.

November 18, Capt. Robert James III relieved Capt. Philip G. McLaughlin as CO of the Michigan (Gold) during a change-of-command ceremony at at the Naval Undersea Warfare Museum in Keyport.

January 3, 2012 USS Michigan pulled into Apra Harbor, Guam, to get tender support from USS Frank Cable (AS 40).