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Marcello Class, Italian Submarines


Specifications:


Tonnage

910 tons surfaced
1220 tons submerged

Dimensions

239'6" by 23'9" by 16'9"
73.1m by 7.2m by 5.1m

Maximum speed     

17 knots surfaced
8.5 knots submerged
Dive
to 328 feet
to 100 meters

Complement

58

Armament

1 4" gun
Machinery
2-shaft diesel (3000 hp) or electric (1300 hp)

Range

9500 nautical miles (17,600 km) at 9 knots on surface
80 nautical miles (150 km) at 4 knots submerged

The Marcellos were originally equipped with eight torpedo tubes, but Commandante Alredo Cappellini was converted to a cargo submarine under German supervision and sent to the Far East in that role. She was seized by the Japanese when Italy capitulated and handed over to the Germans as UIT-24. When the Germans themselves capitulated, the Japanese took her over as I-503.


Units in the Pacific:

Commandante Alredo Cappellini     

Arrived 1943     
Taken over by Germany as UIT-24 in late 1943. Taken over by Japan as I-503 1945-5.

References

Carpenter and Polmar (1986)



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