USCGC Sea Fox was the last Marine Protector-class coastal patrol boat to be built.

[1] Her first home port was Bangor, Washington where she was part of the Coast Guard Maritime Force Protection Unit there, in company with her sister ship USCGC Sea Devil.

[2] Unlike most cutters in her class she is owned by the United States Navy, although she is staffed by United States Coast Guard personnel.

[2] She and three of her sister ships (Sea Devil, Sea Dragon and Sea Dog) were employed to protect the Navy's largest submarines, the nuclear-armed Ohio class, while the submarines were in or near their moorings.

These four cutters mounted an additional gyro-stabilized remotely controlled machine gun.