NAVYPEDIA

Ships

Names	Builders	Completed	Losses	Transfers	Discarding
ML1074 ML1125 ML1129 ML1161 ML1321 - 1329 ML1338 - 1347 ML1352 - 1359	Berthon Boat, Lymington, UK: ML1125 Robinson, Lowestoft, UK: ML1074 Sittingbourne SB Co., UK: ML1161 Nichol, Durban, South Africa: ML1330 - 1337 Thornycroft, Hampton, UK: ML1129 Truscott, St. Joseph, USA: ML1344 - 1347 Purdon & Featherstone, Hobart: ML1321, 1322 MacFarland, Adelaide: ML1323, 1324, 1327 - 1329 Jack, Launceston: ML1325, 1326 Leek, New Jersey, USA: ML1338, 1339 Thorsen, Ellsworth, USA: ML1340 - 1343 Ackerman, Azusa, USA: ML1348 - 1347 Freeport SYd, Long Island, USA: ML1352 - 1355 Elscot, City Island, USA: ML1356 - 1359	1 - 12.1942: ML1074 1942 // 11.1942: ML1129 1 - 12.1943: ML1321, 1325 1942 // 1943: ML1125, 1161 1 - 12.1944: ML1322 - 1324, 1326, 1327, 1329, 1338 - 1343, 1347, 1352 - 1359 1 - 12.1945: ML1328, 1344 - 1346	None	UK: ML1125 (1944) Philippines: ML1322 (1958), ML1326 - 1329 (1958) Iran: ML1323 (6/1956)	1945: ML1330, 1332 1947: ML1125, 1129, 1161 1948: ML1074 1949: L1338 - 1347, 1352 - 1359 1971: SDML1321 1982: SDB1324 1992: SDB1325

Technical data

Displacement standard, t	44 - 46
Displacement full, t	52 - 54
Length, m	22.0
Breadth, m	4.83
Draught, m	1.40 deep load
No of shafts	2
Machinery	ML1321 - 1329: 2 Buda Lanova diesels ML1338 - 1359: 2 Hercules diesels ML1074, 1125: 2 Gardner diesels ML1129, 1161: 2 Thornycroft diesels
Power, h. p.	ML1321 - 1329: 300 ML1338 - 1359: 480 ML1074, 1125: 300 ML1129, 1161: 260
Max speed, kts	ML1321 - 1329: 11.5 ML1338 - 1359: 13.5 ML1074, 1125: 11.8 ML1129, 1161: 11
Fuel, t	diesel oil 7500 l
Endurance, nm(kts)
Armament	earlier boats: 1 x 1 - 47/40 3pdr Hotchkiss Mk I or 1 x 1 - 40/39 2pdr QF Mk VIII, 2 x 1 - 7.7/87, 8 DC boats completed from 1943 (mostly): 1 x 1 - 47/40 3pdr Hotchkiss Mk I or 1 x 1 - 40/51 QF Mk XIV or 1 x 1 - 40/39 2pdr QF Mk VIII, 1 x 1 - 20/70 Oerlikon Mk II/IV, 2 x 2 - 7.7/94, 8 DC boats completed from 1944 - 1945 (mostly): 2 x 1 - 20/70 Oerlikon Mk IV, 2 x 2 - 7.7/94, 8 DC
Electronic equipment	completed 1940-1943: type 134 sonar completed 1943-1945: type 291U radar (some), type 134 sonar
Complement	10

Standard scale images

Project history

Wooden-hulled round-bilge boats with good seaworthiness.

Modernizations

by 1945 the majority was armed with 2 x 1 - 20/70 Oerlikon Mk II/IV or (1 x 1 - 40/39 2pdr QF Mk VIII, 1 x 1 - 20/70 Oerlikon Mk II/IV), 2 x 2 - 7.7/94, 8 DC

Naval service

SDML means "seaward defence motor launches" and SDB are "seaward defence boats"