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fighting ships of the world

UNITED STATES OF AMERICA

 

COASTAL FORCES

 

"MSSC Mk I" medium SEAL craft (36UB691) (1969)

   

Names

36UB691-699

36UB6910

Builders

 

Commissioned

1969: 36UB691-699, 36UB6910

Losses

?

Transfers

none

Discarding

1970s?

 

 

Displacement standard, t

 

Displacement full, t

 

Length, m

11.0

Breadth, m

 

Draught, m

 

No of shafts

 

Machinery

 

Power, h. p.

 

Max speed, kts

 

Fuel, t

 

Endurance, nm(kts)

 

Armament

3 x 1 - 7.6/90, 1 x 1 - 40/12 M19 grenade launcher

Electronic equipment

 

Complement

 

Project history: The SEALs were organised in about 1961. Initially they operated from special swimmer delivery craft, some of them prototypes of the riverine craft. Two LCMs were modified as heavily-armoured SEAL support boats (heavy SEAL support craft, or HSSCs) and modified LCPLs became medium SEAL support craft (MSSC). Requirements for replacements (a new MSSC and a light craft, the LSSC) were formally stated in December 1967. Both were modified commercial boats, armed with a variety of small guns on pintle mounts. The LSSC was derived from a commercial 26-footer modified as the STAB (SEAL team assault boat). They were later redesignated STABs (strike attack boats). In addition, ten 36ft MSSCs were bought in 1968.

Modernizations: None.

Naval service: Boats were actively used in Vietnam.

MSSC

© Ivan Gogin, 2015