The Illinois (SSN 786) is the 13th Virginia-class attack submarine and the second United States Navy ship named for the state of Illinois. The contract to build her was awarded to General Dynamics Electric Boat division on December 22, 2008.

June 2, 2014 The keel for Illinois was laid down during a ceremony at GDEB’s Quonset Point facility in North Kingstown, R.I.

July 29, 2015 The Illinois moved from the hangar bay, in which she was assembled, to a floating Dry Dock #3 where she floated off for the first time.

October 10, The Pre-Commissioning Unit (PCU) Illinois was christened during an 11 a.m. EDT ceremony at Electric Boat shipyard in Groton, Conn. The First Lady Michelle Obama served as sponsor of the ship. Cmdr. Jessie A. Porter is the prospective commanding officer.

July 31, 2016 PCU Illinois returned to Electric Boat shipyard after a two-day underway for Alpha sea trials; Underway again from Aug. 1-?.

August 27, U.S. Navy took delivery of PCU Illinois, from the General Dynamic's Electric Boat, four days ahead of schedule; Arrived in Naval Submarine Base New London for the first time on Aug. 30.

October 29, USS Illinois was commissioned during an 11 a.m. EDT ceremony at Pier 6N on NSB New London in Groton, Connecticut.

October 31, Cmdr. Neil J. Steinhagen relieved Cmdr. Jessie A. Porter as CO of the SSN 786 during a change-of-command ceremony on board the sub.

November 6, The Illinois moored at Trident Wharf in Port Canaveral, Fla., for an eight-day port call; Brief stop at Trident Wharf on Nov. 19; Returned home on Nov. 23; Underway again on Dec. ?; Brief stop off Groton on Dec. 12.

January 31, 2017 SSN 786 recently departed Naval Submarine Base New London for acoustic trials off the coast of Florida; Conducted surface operations, 2 miles off the coast of North Beach in Hollywood, Fla., and Port Everglades, from Feb. 6-9.

February 15, Electric Boat Corp. was awarded a $13,9 million modification to a previously-awarded contract (N00024-09-C-2104) for the planning and execution of USS Illinois Post Shakedown Availability (PSA). The work is scheduled to be completed by June.

February 17, The Virginia-class attack submarine moored at Trident Wharf in Port Canaveral for a brief stop to embark 26 members and officers of the Illinois Commissioning Committee for a day-long VIP cruise.

March 16, Electric Boat Corp. was awarded a $16,9 million modification to a previously-awarded contract (N00024-09-C-2104) for the planning and execution of USS Illinois guaranty. The work is scheduled to be completed by October.

September 5, The Illinois departed Electric Boat shipyard for sea trials; Brief stop off Groton for personnel transfer on Sept. 11; Returned home on Sept. 1?; Underway again from Sept. 25- Oct. 3.

November ?, SSN 786 departed Groton, Conn., for a homeport change to Pearl Harbor, Hawaii; Transited the Panama Canal southbound on Nov. 11.

November 22, USS Illinois moored at Wharf S10 on Joint Base Pearl Harbor-Hickam for the first time.

March 24, 2018 The Illinois departed homeport for routine operations in the Hawaiian Op. Area; Moored at Wharf Y3A on April 2; Underway again on April 1?.

June ?, USS Illinois moored at Wharf Y3B on Joint Base Pearl Harbor-Hickam; Underway in support of Rim of the Pacific (RIMPAC) 2018 exercise on July ?; Brief stop in Pearl Harbor on July 30 and Aug. 5; Moored at Wharf S10 for a brief stop on Aug. 13; Brief stop in Pearl Harbor on Aug. 26; Moored at Pier S9 on Sept. 7; Underway again on Sept. 20.

September 28, The Illinois made a brief stop in Pearl Harbor for personnel transfer; Returned home on Oct. 1; Underway again on Oct. 3; Moored at Wharf Y3A from Oct. 9-11; Brief stop in Pearl Harbor on Oct. 12; Moored at Wharf Y3A on Oct. 1?.

December 10, USS Illinois moored at Wharf S1B on Joint Base Pearl Harbor-Hickam after an 11-day underway for routine training; Moored at Wharf W5, Naval Magazine Lualualei for ammo onload on Jan. 7; Underway on Jan. ?.

January 25, 2019 The Illinois moored at Wharf S1B on Joint Base Pearl Harbor-Hickam; Underway again on Jan. 30; Brief stop in Pearl Harbor on Feb. 1; Returned home on Feb. 7; Underway again on Feb. 9; Moored at Pier S9 on Feb. ?.

March 1, USS Illinois departed Pearl Harbor for its maiden western Pacific deployment.

March 11, SSN 786 moored at Berth 13S in Fleet Activities Yokosuka, Japan, for a five-day port visit; Moored at Naval Base Guam on March 19.

April 29, The Illinois made a brief stop off Yokosuka for personnel transfer; Brief stop off White Beach Naval Facility in Okinawa on May 16 and June 5; Moored at Berth 13S in Fleet Activities Yokosuka again from June 25- July 1 and July 15-18.

September 6, USS Illinois moored at Wharf S1B on Joint Base Pearl Harbor-Hickam following a six-month deployment.

September 30, The Illinois returned to homeport after underway for routine operations.

November 8, Cmdr. Ronald Hatt relieved Cmdr. Neil J. Steinhagen as CO of the Illinois during a change-of-command ceremony on board the sub.

November 1?, USS Illinois departed Joint Base Pearl Harbor-Hickam for routine operations; Brief stop in Pearl Harbor for personnel transfer on Nov. 15; Moored at Wharf Y3B on Nov. 18.

March 23, 2020 The Illinois moored at Wharf W5, Naval Magazine Lualualei for ammo onload.?

August 22, The Virginia-class attack submarine made a brief stop in Pearl Harbor for personnel transfer.

September 25, USS Illinois made a brief stop off Naval Base Point Loma in San Diego for personnel transfer; Brief stop off Point Loma again on Sept. 30.

December 3, SSN 786 moored at Wharf S10 on Joint Base Pearl Harbor-Hickam after underway for routine operations.

December 11, Cmdr. Daniel J. McNab relieved Capt. Aaron C. Peterson as CO of the Illinois during a change-of-command ceremony on board the sub.

March 5, 2021 USS Illinois is currently moored at Wharf Y3B on Joint Base Pearl Harbor-Hickam.

March 30, USS Illinois departed Pearl Harbor for a scheduled western Pacific deployment.

April 28, The Illinois made a brief stop off the coast of White Beach Naval Facility in Okinawa, Japan, for supplies; Brief stop off White Beach again on June 24; Moored at Naval Base Guam on July 1?.

September 13, USS Illinois moored at Wharf S1B on Joint Base Pearl Harbor-Hickam following a five-and-a-half month deployment.

November 22, The Illinois departed Joint Base Pearl Harbor-Hickam for routine operations; Moored at Wharf Y2 on Nov. 2?.

March 5, 2022 USS Illinois arrived at Ice Camp Queenfish, about 160 n.m. north of Prudhoe Bay, Alaska, to participate in Ice Exercise (ICEX) 22, along with the USS Pasadena (SSN 752); Returned home on April ?; Underway again on May 3.

May 6, The Illinois made a brief stop in Pearl Harbor for pesonnel transfer; Moored at Wharf Y3A on May ?.

October 12, USS Illinois made a brief stop in Pearl Harbor for pesonnel transfer; Moored at Wharf S1B on Oct. ?.

December 6, USS Illinois departed Pearl Harbor for a scheduled western Pacific deployment.

January 10, 2023 The Illinois moored at Berth 1, Sierra Wharf in Apra Harbor, Guam; Moved to Romeo Wharf, outboard the USS Emory S. Land (AS 39), on Jan. 12; Departed Guam on Jan. 24; Brief stop in Sasebo Harbor, Japan, for personnel transfer on Jan. 28; Moored at Berth 2, Romeo Wharf in Apra Harbor from March ?-28 and April 14-2?.

July 3, USS Illinois moored at Wharf S21A on Joint Base Pearl Harbor-Hickam following a seven-month deployment.

August 11, Cmdr. Johannes Smith relieved Cmdr. Daniel J. McNab as CO of the SSN 786 during a change-of-command ceremony on board the sub.

August 1?, The Illinois departed Joint Base Pearl Harbor-Hickam for routine operations; Brief stop in Pearl Harbor for personnel transfer on Aug. 22 and 24th.