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fighting ships of the world

UNITED STATES OF AMERICA

 

COASTAL FORCES

 

PT811 torpedo boat (1951)

 

Names

PT811, 12/1962- PTF2

Builders

Trumpy, Annapolis: PT811

Commissioned

3/1951: PT811

12/1962: PTF2 (2nd time)

Losses

none

Transfers

none

Discarding

11/1959: PT811 (1st time)

8/1965: PTF2

 

Displacement standard, t

 

Displacement full, t

90

Length, m

28.7

Breadth, m

7.60

Draught, m

1.27

No of shafts

4

Machinery

4 Packard petrol engines

Power, h. p.

10000

Max speed, kts

46

Fuel, t

petrol

Endurance, nm(kts)

 

Armament

2 x 1 - 40/60 Mk 3, 2 x 2 - 20/70 Mk 24, 1 x 1 - 81/12 M29 mortar, 4 - 572 TR (never really carried), 4 DC

Electronic equipment

SPS-5 radar

Complement

17

Ship project history: PT809-812 were intended to embody wartime design lessons. All were aluminium; 809 was riveted, 810 riveted and welded, and 811 and 812 all-welded; each was designed to mount two single 40mm guns (one in 812), two twin 20mm, one 81mm mortar, one Mk 107 rocket launcher (812 only), four torpedo racks, and four depth charge racks; speed was set at 46kts (43 for the somewhat longer 812). Although these figures represented a considerable advance on Second World War practice, they still did not make up for the lack of an operational requirement for such coastal craft.

Modernizations: None.

Naval service: PT811 was stricken 1/11/1959 but was reinstated in December 1962 as fast patrol craft PTF2.

PT811 1951

Ivan Gogin, 2015