Ballistic Missile Submarine patrols are meant to provide the sea-based leg of the nation's strategic nuclear defense triad (sea, air, and land based strike/defense capability).
FBM submarines are given a designated area to patrol, that puts them within range of their targets should an order ever come. They avoid all contact with ships or other submarines, and do not respond via radio unless in emergencies or specifically instructed to by their respective commands.
FBM's have 2 crews that rotate every 3 months. One month is spent for transfer and refit of the boat, and the other 2 months are spent for transit and actual patrol time.
USS George Washinton.
The codes are- for conventional () non nuclear powered) Submarines- SS ( for example the U.S.S. is SS-297. Atomic subs are SSN or SSBn - BN if fitted for Ballistic missiles such as the Polaris or Trident types ( there is no Submarine Called the Polaris- it is a guided missile!) so SS- submarine, SSN- Nuclear submarine- SSBN- Nuclear submarine- Missile type.
The duration of Submarine Patrol is 1.58 hours.
Submarine Patrol was created on 1938-11-25.
Trident Ballistic Missile Submarine
In Submarine Warfare, "areas" are defined as patrol areas; e.g., for a Fast-Attack submarine, her patrol area may cover a specific ocean or coastal area, or ahead of a Carrier Battle Group/Task Force if providing escort/screening duty. For an FBM (missile boat), their area will put them in the optimum launch position for their targets should they ever get an order.
A torpedo...
Royal Navy submarine
No
The Russian missile launching submarine, Typhoon Class, is slightly bigger than the USA missile launching submarine, Trident Class.
Submarine Patrol - 1938 is rated/received certificates of: Finland:K-16 Norway:A (1939) USA:Approved (PCA #4503)
In 1957, the Lawrence Livermore National Laboratory was selected to develop the nuclear warhead for the UGM-27 Polaris SLBM.