MS75 1943
|
Names |
MS51 - 53 MS54, 1.1949- MV614, 11.1952- MS614, 1.1954- P474 MS474 MS55, 1.1949- MV615, 11.1952- MS615, 1.1954- P481 MS481 MS56, 1.1949- MV616, 11.1952- MS616, 1.1954- P482 MS482 MS61 - 66 MS71 MS72, 1.1949- MV617, 11.1952- MS617, 1.1954- P483 MS483 MS73, 1.1949- MV618, 11.1952- MS618, 1.1954- P484 MS484 MS74, 1.1949- MV619, 11.1952- MS619, 1.1954- P475 MS475 MS75; MS76 |
|
Builders |
CRDA, Monfalcone: MS51-56, 61-66, 71-76 |
|
Completed |
2 - 6.1943: MS51 - 56, 61 - 66, 71 - 75 |
|
Losses |
captured incomplete by Germany: MS76 (10.9.1943, commissioned 12.11.1943 as SA7) MS51 (9.9.1943, later German SA4), MS62 (12.7.1943), MS63 (9.9.1943 German SA5), MS66 (3.8.1943), MS71 (10.9.1943 German SA6) |
|
Transfers |
Soviet Union 5 - 7.1949: MS52 (ÒÊ-970 [TK-970]), MS53 (ÒÊ-971 [TK-971]), MS61 (ÒÊ-972 [TK-972]), MS65 (ÒÊ-973 [TK-973]), MS75 (ÒÊ-974 [TK-974]) |
|
Discarding |
1/1947: MS64 12/1962: MS475, 483 3/1963: MS482, 484 1965: MS475 1979: MS474, 481 |
|
Displacement standard, t |
|
|
Displacement full, t |
66 |
|
Length, m |
28.0 |
|
Breadth, m |
4.30 |
|
Draught, m |
1.60 |
|
No of shafts |
3 |
|
Machinery |
3 Isotta Fraschini petrol engines |
|
Power, h. p. |
3450 |
|
Max speed, kts |
31 |
|
Fuel, t |
petrol 9 |
| Endurance, nm(kts) | 330(31) |
|
Armament |
MS51 - 56, 62 - 66, 71 - 73: (1 - 2) x 2 - 20/65 Breda 1935, 2 x 1 - 8.80, 2 - 533 TT (4), 2 - 450 TT, 8 DC MS61: 2 x 1 - 13.2/76, 2 x 1 - 8.80, 2 - 533 TT (4), 2 - 450 TT, 8 DC MS74, 75: (1 - 2) x 2 - 20/65 Breda 1935, 2 x 1 - 8.80, 2 - 533 TT (4), 2 - 450 TT, 2 SLC human torpedoes or 1 MTSM midget MTB or 1 MTM or 1 MTR explosive boat |
| Electronic equipment | presumably hydrophone |
|
Complement |
19 |
Project history: Development of "I" type with strengthened, at the expense of installation of two 450mm torpedo racks additionally. Displacement growth has led to some decrease in speed. For elimination of this lack on last boat of a series (MS76) more powerful 4500hp motors were installed, giving 35kts speed. Two boats (MS74 and 75) are arranged as human torpedo and suicide boat carriers (2 SLS, either 1 MTR, or 1 ÌÒÌ, or 1 MTSM).
Plans of building of 44 more boats (types "III" and "IV", development of type "II") in connection with armistice signed in September, 1943 have appeared were not realised.
Modernizations: 1949, MV614 - 619: were armed with 3 x 2 - 20/65 Breda 1940
1952, MS614 - 619: + 2 - 533 TT (4), 2 - 450 TT, 8 DC
1961, MS474, 481: new diesels were installed (4500hp, 33kts); boats were converted to convertible MTB / MGB armed with 1 x 1 - 40/60 Mk 3, 2 - 450 TT, mines as MTB or 2 x 1 - 40/60 Mk 3, mines as MGB.
Naval service: MS74 and MS75 were captured by Germans 12 and 10.9.1943 respectively, transferred to RSI and returned to Italian navy in 1945.
MS474 1954
© Ivan Gogin, 2009-15