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Natsios Young Architects

29 May 2002

Naval Submarine Base New London:

Command History

Naval Submarine Base New London is the Navy's first Submarine Base. In 1868 in effort to help the Navy transition from sail to steam, the State of Connecticut gave the land SUBASE is now located to the Navy. It was not until 1872 that two brick buildings and a "T" shaped pier were built and the site officially declared a Navy Yard. This new yard was primarily used as a coaling station by Atlantic Fleet small craft.

On October 13,1915, the monitor Ozark, A tender, and 4 submarines that accompanied her arrived at SUBASE. Future submarines and tenders followed and in 1916 the Navy established it as a submarine base. Following World War I the Navy established schools and training facilities at SUBASE.

Today the Naval Submarine Base New London (SUBASE NLON), located on the east side of Thames River in Groton, CT, proudly claims its motto to be "The First and Finest." All submariners in today's Navy will be stationed here for training and perhaps a tour onboard a fast attack submarine or with a pre-commissioning crew while their new submarine is under construction. The base occupies more than 500 acres, supports twenty one attack submarines, and the Navy's nuclear research deep submersible NR-1, the Navy's Submarine School, the Naval Submarine Support Facility, the Submarine force Tactical Development Group - Commander Submarine Development Squadron 12, and the housing and support facilities for 10,000 active duty and civilian workers and their families.

Naval Security Group Activity Groton:

Naval Security Group Activity Groton, on board Naval Submarine Base New London in Groton, Connecticut, is home to the finest Sailors in the fleet.

Mission Statement

NSGA Groton provides cryptologic direct support systems installation, maintenance, and personnel augmentation support to U.S. Atlantic Fleet submarines.


In October 1959, the Naval Security Group designated its first Special Assistant for Naval Security Group matters and assigned him additional duty as Officer in Charge, Naval Security Group Detachment, Commander Submarine Force, U.S. Atlantic Fleet.

One year later, the Chief of Naval Operations designated that position as Officer in Charge, Naval Detachment and Director of Intelligence Special Security Officer for Deputy Commander Submarine Force, U.S. Atlantic Fleet.

In October 1972, the Detachment was designated Naval Security Group Detachment Groton under the command of Commander, Naval Security Group Command. The Detachment was commissioned a Naval Security Group Activity on 1 May 1980.

New London


A possibility for the NSGA Groton facility.

Another possibility for the NSGA Groton facility.