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fighting ships of the world

SOVIET NAVY (USSR)

SUBMARINES

"Series VI-bis" submarines

M-53 1935

Name No Builder Laid down Launched Comp Fate
Ì-53 <M-53>, 10/1939- Ì-47 <M-47>   198 Yd (Marti Yd), Nikolayev 2/1934 23/12/1934 6/1935 stricken 11/1950
Ì-54 <M-54>   200 Yd (61 Kommunar Yd), Nikolayev 12/1934 15/9/1935 10/1936 stricken 12/1944
Ì-55 <M-55>   200 Yd (61 Kommunar Yd), Nikolayev 3/1935 20/11/1935 10/1936 stricken 12/1944
Ì-56 <M-56>, 10/1939- Ì-48 <M-48>   200 Yd (61 Kommunar Yd), Nikolayev 3/1935 20/11/1935 10/1936 stricken 11/1950
Ì-71 <M-71>   198 Yd (Marti Yd), Nikolayev // 190 Yd (Zhdanov Yd), Leningrad 3/1934 31/12/1934 8/1935 scuttled 24/6/1941
Ì-72 <M-72>   198 Yd (Marti Yd), Nikolayev // 190 Yd (Zhdanov Yd), Leningrad 3/1934 23/12/1934 8/1935 stricken 12/1944
Ì-73 <M-73>   198 Yd (Marti Yd), Nikolayev // 190 Yd (Zhdanov Yd), Leningrad 3/1934 5/1/1935 8/1935 stricken 12/1944
Ì-74 <M-74>   198 Yd (Marti Yd), Nikolayev // 190 Yd (Zhdanov Yd), Leningrad 3/1934 31/12/1934 8/1935 stricken 12/1944
Ì-75 <M-75>   198 Yd (Marti Yd), Nikolayev // 190 Yd (Zhdanov Yd), Leningrad 3/1934 8/2/1935 8/1935 stricken 12/1944
Ì-76 <M-76>   198 Yd (Marti Yd), Nikolayev // 190 Yd (Zhdanov Yd), Leningrad 3/1934 8/2/1935 8/1935 stricken 12/1944
Ì-77 <M-77>   196 Yd (Sudomekh Wks), Leningrad 3/1934 21/3/1936 6/1936 stricken 2/1949
Ì-78 <M-78>   196 Yd (Sudomekh Wks), Leningrad 3/1934 21/3/1936 6/1936 sunk 23/6/1941
Ì-79 <M-79>   198 Yd (Marti Yd), Nikolayev // 190 Yd (Zhdanov Yd), Leningrad 8/1934 15/9/1935 7/1936 stricken 2/1949
Ì-80 <M-80>   198 Yd (Marti Yd), Nikolayev // 190 Yd (Zhdanov Yd), Leningrad 8/1934 15/9/1935 7/1936 scuttled 24/6/1941
Ì-81 <M-81>   198 Yd (Marti Yd), Nikolayev // 190 Yd (Zhdanov Yd), Leningrad 8/1934 15/9/1935 7/1936 sunk 1/7/1941
Ì-82 <M-82>, 10/1939- Ì-43 <M-43>   196 Yd (Sudomekh Wks), Leningrad 2/1934 10/6/1935 11/1935 stricken 11/1950
Ì-83 <M-83>   196 Yd (Sudomekh Wks), Leningrad 2/1934 1/6/1935 11/1935 scuttled 26/6/1941
Ì-84 <M-84>, 10/1939- Ì-44 <M-44>   196 Yd (Sudomekh Wks), Leningrad 3/1934 15/7/1935 11/1935 stricken 11/1950
Ì-85 <M-85> (ex-Ì-77 <M-77>), 10/1939- Ì-45 <M-45>   198 Yd (Marti Yd), Nikolayev // 190 Yd (Zhdanov Yd), Leningrad 5/1934 29/4/1935 11/1935 stricken 11/1950
Ì-86 <M-86> (ex-Ì-78 <M-78>), 10/1939- Ì-46 <M-46>   198 Yd (Marti Yd), Nikolayev // 190 Yd (Zhdanov Yd), Leningrad 8/1934 25/5/1935 11/1935 stricken 11/1950

 

Displacement standard, t

 

Displacement normal, t

161 / 202

Length, m

37.8

Breadth, m

3.11

Draught, m

2.58

No of shafts

1

Machinery

1 38B8 diesel / 1 PG60/34 electric motor

Power, h. p.

685 / 240

Max speed, kts

13.2 / 7.2

Fuel, t

diesel oil 13
Endurance, nm(kts) 1065(10) / 55(2.5)

Armament

1 x 1 - 45/46 21K, 2 - 533 TT (bow, 2)

Complement

17

Diving depth operational, m

50

Ship project history: These submarines were developed since 1930 as small patrol submarines for Baltic, but since 1932 usage in the Far East became priority, where, thanks to the small dimensions, they could be transported without dismantling. The project was approved in September, 1932. Single-hulled all-welded (M-1-6 were riveted), CT and bridge were made from duralumin. On trials bad seaworthiness, a considerable diving time (2min) and surface speed shortage (11kts instead of designed 13kts) were revealed.
    Following 20 boats were built under the improved project VI-bis. Hull form was improved, CT form was changed, fast diving tank was fitted. It has allowed to raise speed both in surface, and in underwater positions and to moderate a diving time to 80sec, but diving depth still did not exceed 60m.

Modernizations: None.

Naval service: M-71 and M-80 on the night of 24/6/1941 were blown up at Libava. M-83 was scuttled in the same place being damaged by German field guns 27/6/1941. M-74 was sunk 24/9/1941 by German aircraft at Kronstadt, in 1942 raised and commissioned again in November. M-78 was sunk 23/6/1941 by German submarine U144 SW of Vindava. M-81 was lost 1/7/1941 on a mine in Muhu-vjajn Strait.

 

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© Ivan Gogin, 2009-11