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Marconi Class, Italian Submarines


Specifications:


Tonnage

1036 tons surfaced
1489 tons submerged

Dimensions

249'3" by 22'3" by 15'6"
76 m by 7.9m by 4.7m

Maximum speed     

17.75 knots surfaced
8.5 knots submerged
Dive
to 300 feet
to 90 meters

Complement

57
Machinery
2-shaft diesel (3600 hp) or electric (1240 hp)

Range

9500 nautical miles (17,600 km) at 9 knots on surface
110 nautical miles (200 km) at 3 knots submerged

The Marconi were originally equipped with eight torpedo tubes, but Luigi Torelli 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-25. When the Germans themselves capitulated, the Japanese took her over as I-504.


Units in the Pacific:

Luigi Torelli     

Arrived 1943     
Taken over by Germany as UIT-25 1943-9. Taken over by Japan as I-504 1945-5.

References

Carpenter and Polmar (1986)



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