NAVYPEDIA

Photo

PT31 1941

Ships

Names	Builders	Commissioned	Losses	Transfers	Discarding
PT20 - 68	ELCO, Bayonne: PT20 - 68	6-9/1941: PT20 - 48 1-3/1942: PT49 - 68	PT22 (12.1.1943), PT28 (12.1.1943), PT31 (19.1.1942), PT32 (13.3.1942), PT33 (26.12.1941), PT34 (9.4.1942), PT35 (12.4.1942), PT37 (1.2.1943), PT41 (15.4.1942), PT43 (11.1.1943), PT44 (12.12.1942), PT63 (18.6.1944), PT67 (17.3.1943), PT68 (1.10.1943)	United Kingdom, 1-3/1942: PT49 - 58 (MTB307 - 316)	10/1943: PT21, 23, 25, 26 2 - 12.1944: PT20, 24, 27, 29, 30, 36, 38 - 40, 42, 45 - 48, 59 - 61 1/1945: PT62, 64 - 66

Technical data

Displacement standard, t	35
Displacement full, t	46
Length, m	23.5
Breadth, m	6.07
Draught, m	1.37
No of shafts	3
Machinery	3 petrol engines
Power, h. p.	4050
Max speed, kts	41
Fuel, t	petrol 11400 l
Endurance, nm(kts)	1400 ()
Armament	PT20 - 44: 2 x 2 - 12.7/90, 4 - 533 TT or (2 - 533 TT, 2 DCR (8)) PT45, 59 - 68: 1 x 1 - 20/70 Mk 4, 2 x 2 - 12.7/90, 4 - 533 TT or (2 - 533 TT, 2 DCR (8)) PT46 - 48: 1 x 1 - 20/70 Mk 4, 2 x 2 - 12.7/90, 1 x 1 - 7.6/90, 4 - 533 TT or (2 - 533 TT, 2 DCR (8)) PT49 - 58: 1 x 2 - 12.7/62; 2 x 2 - 7.7/83, 2 - 533 TT
Complement	17

Graphics

Project history

ELCO 77ft type. Development of 70ft type (10 boats were built, all were transferred to RN by lend-lease). At the expense of dimensions increasing the number of TTs has increased from two to four.

Modernizations

1941, PT20 - 27, 29, 36 - 40, 42 - 45: + 1 x 1 - 7.6/90

1941, PT31 - 35, 41: + 2 x 1 - 7.7/83

1942, PT22, 24, 26, 27: + 1 x 1 - 20/70 Mk 4

1942, PT65 - 68: + 1 x 1 - 7.6/90

1943, PT59 - 61: - 4 - 533 TT; + 2 x 1 - 40/56 Mk 1.2, 6 x 2 - 12.7/90

Naval service

: No significant events.

© Ivan Gogin, 2014