The Macalle was an Italian Gemma Class coastal submarine of 615 tons displacement launched in 1936. The Macalle was powered by diesel engines providing a top speed of 14 knots surfaced and 8.5 knots submerged and could dive to a depth of 50 fathoms. Armaments consisted of one 3.9 inch gun; two 13 mm anti-aircraft guns and six 21 inch torpedo tubes. Research Macalle
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