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fighting ships of the world

REGIA MARINA (ITALY)

SUBMARINES

PIETRO MICCA large submarine minelayer (1935)

Pietro Micca 1940

Name No Builder Laid down Launched Comp Fate
Pietro Micca   Tosi, Taranto 10/1931 31/3/1935 10/1935 sunk 29/7/1943
  

Displacement standard, t

1371

Displacement normal, t

1545 / 1940

Length, m

90.3

Breadth, m

7.70

Draught, m

5.30

No of shafts

2

Machinery

Tosi diesels / Marelli electric motors

Power, h. p.

3000 / 1500

Max speed, kts

15.5 / 8.5

Fuel, t

diesel oil 67 (norm.)

endurance, nm(kts) 12000(8) / 80(4)

Armament

6 - 533 TT (4 bow, 2 stern, 10), 2 x 1 - 120/45 OTO 1931, 2 x 2 - 13.2/76, 20 mines

Complement

72

Diving depth operational, m 90

Ship project history: Cruiser submarine minelayer. The project was developed by builder. Partially double-hulled. Mines were stored in vertical trunks, in lower part of a pressure hull amidships. Minelaying was realised as on German submarines, downwards. Though thus there were no such problems with trimming as at usage of the horizontal tubes, the similar scheme had two significant lacks. First, minelaying could be realised only if between submarine keel and sea bottom there was sufficient clearance for mine withdrawal; and a backlash blasting on a mine laid "under herself", secondly, was possible.

As a whole these submarine was appeared successful (short of a doubtful method of minelaying), possessed good seaworthiness and quite good manoeuvrability for her dimensions.

Modernizations: late 1940: submarine was converted to transport (ammunition and petrol).

Naval service: Too large for service in Mediterranean sea, she already in the late 1940 has been reoriented on transport service between Italy and Africa. In 1941 Pietro Micca was hard damaged by a torpedo, but repaired. Pietro Micca was sunk 29/7/1943 in the Otranto Straits by British submarine Trooper.

Pietro Micca

 

Ivan Gogin, 2009-14