HOME

fighting ships of the world

REGIA MARINA / ITALIAN NAVY (ITALY)

COASTAL FORCES

"SVAN velocissimo" type motor torpedo boats (1929-1934)

MAS432 1930

Names

MAS430

MAS432 - 437

Builders

SVAN, Venezia: MAS430, 432-437

Completed

1929: MAS430

1930: MAS432 - 436

1934: MAS437

Losses

MAS430 (9.9.1943 German S602), MAS437 (9.9.1943, later German S625)

Transfers

Nationalist Spain 4.1937: MAS435, 436 (Candido Pérez, Javier Quiroga)

Discarding

12/1943: MAS432

8/1949: MAS433, 434

  

Displacement standard, t

MAS430: 13.8

MAS432 - 436: 14.1

MAS437: 18.5

Displacement full, t

 

Length, m

16.0

MAS437: 17.5

Breadth, m

3.25

MAS437: 3.56

Draught, m

MAS430: 1.00

MAS432 - 436: 1.08

MAS437: 1.25

No of shafts

2

Machinery

MAS430, 432 - 436: 2 Isotta Fraschini petrol engines

MAS437: 2 Fiat diesels

Power, h. p.

1500

Max speed, kts

40

Fuel, t

petrol

MAS437: diesel oil

Endurance, nm(kts)

MAS430, 432 - 436: 125(36)

MAS437: 100(40)

Armament

2 x 1 - 6.5/115, 2 - 450 TT, 5 DC

Electronic equipment hydrophone

Complement

MAS430: 9

MAS432 - 437: 13

Project history: MAS430 was further development of "12-ton" SVAN boat of WWI-era. At the expense of installation of much more powerful engines the speed was significantly increased. Anti-submarine armament was presented by five small 50kg DCs and hydrophone.

    MAS432-436 belonged to slightly changed version of "SVAN 13-ton fast" type, named "SVAN 14-ton fast".

MAS437 belonged to "SVAN high-speed diesel" type, diesel-engined variant of "SVAN 14-ton fast" type. Because of installation of heavier diesels she was received a little bit more larger than petrol-engined boats, but in the speed practically has not lost.

Modernizations: 1938 - 1939, MAS433, 434: engines were replaced by Fiat ones

1940, MAS432 - 434, 437: - 2 x 1 - 6.5/115; + 1 x 1 - 13.2/76, 2 x 1 - 8.80.

Naval service: In 1946 MAS433 and MAS434 were transferred to Customs service.

 

© Ivan Gogin, 2009-15