Jymy-class motor torpedo boat

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Class overview
NameJymy class
BuildersCantieri Baglietto, Genoa, Italy
Operators
Completed4
Retired4
General characteristics
TypeMotor torpedo boat
Displacement22 tons
Length18.7 m (61 ft)
Beam4.7 m (15 ft)
Draught1.5 m (4 ft 11 in)
Speed42 knots (78 km/h; 48 mph)
Range
  • 330 nmi (610 km; 380 mi) at 42 kn (78 km/h; 48 mph)
  • 836 nmi (1,548 km; 962 mi) at 8 kn (15 km/h; 9.2 mph)
Complement1+10
Armament
  • 1 × 20 mm Breda
  • 1 × 12.7 mm machine gun
  • 2 × 450 mm torpedoes

The Jymy-class motor torpedo boats (English: Rumble) or J class was an Italian-designed class of motor torpedo boats, seeing service during World War II with the Italian Navy in Lake Ladoga, and later with the Finnish Navy in the Gulf of Finland.

The four boats of the J class were built by in Genoa, Italy and transported to Finland over land and sea. The ships were initially used by an Italian contingent, the XII Squadriglia MAS, who served in Lake Ladoga during the sailing season of 1942. The Finns purchased the boats on 5 May 1943 in Tallinn and transported them to Finland.

The ships were converted into patrol boats in 1949, in accordance with the Paris peace treaty. The J-class vessels were scrapped in 1961.

Vessels of the class[]

  • Jylhä (J 1, ex-MAS 526)
  • Jyry (J 2, ex-MAS 527)
  • Jyske (J 3, ex-MAS 528)
  • Jymy (J 4, ex-MAS 529)
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