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GOFFREDO MAMELI medium submarines (1929)


Photo



Pier Capponi at war  

Ships


Name No Yard No Builder Laid down Launched Comp Fate
Pier Capponi     Tosi, Taranto 8.1925 19.6.1927 1.1929 sunk 31.3.1941
Giovanni da Procida     Tosi, Taranto 9.1925 1.4.1928 1.1929 discarded 2.1948
Goffredo Mameli (ex-Masaniello)     Tosi, Taranto 8.1925 9.12.1926 1.1929 discarded 2.1948
Tito Speri     Tosi, Taranto 9.1925 25.5.1928 8.1929 discarded 2.1948


Technical data


Displacement standard, t786
Displacement normal, t

810 / 993

Length, m

64.6

Breadth, m

6.51

Draught, m

4.30

No of shafts

2

Machinery

2 Tosi diesels / 2 CGE electric motors

Power, h. p.

3000 / 1100

Max speed, kts

17.2 / 7.7

Fuel, t

diesel oil 48

Endurance, nm(kts)3500(8) / 110(3)
Armament

1 x 1 - 102/35 Schneider-Armstrong 1914-15, 2 x 1 - 13.2/76, 6 - 533 TT (4 bow, 2 stern, 10)

Electronic equipmenthydrophone
Complement

49

Diving depth operational, m100


Standard scale images


<i>Pier Capponi</i> 1940
Pier Capponi 1940


Graphics


<i>Pier Capponi </i>at war  
Pier Capponi at war  


Project history

Design was developed by builder with usage of experience of former German submarines service, received by Italy after the First World War. Partially double-hulled. As a whole successful boats which have become the sample for subsequent submarines of the Italian fleet. Insufficient stability was unique appreciable defect of this class. For correction of it soon after the completion all four ships received external bulges. The  speed was lowered from 17.2/7.7 to 15/7.5kts.

Modernizations

1930, all: bulges were fitted, max speed was 15 / 7.5 kts.

1942, all survived: diesels were replaced by new Tosi engines (4000bhp, 17kts surfaced)

Naval service

Pier Capponi was sunk 31.3.1941 S of Stromboli by British submarine Rorqual.