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"Baglietto velocissimo" type motor torpedo boats (MAS501) (1937)


Photo



MAS505 1941  

Ships


Names Builders Completed Losses Transfers Discarding

MAS501 - 509

MAS510, 1946- ME B1, 1947- MAS1

MAS511 - 513

MAS514, 1946- ME B2, 1947- MAS2

MAS515 - 519

MAS520, 1946- ME B3, 1947- MAS3

MAS521, 1946- ME B4, 1947- MAS4, 1949- NE109

MAS522

MAS523, 1944- MAS MT523

MAS524

MAS525, 1946- ME B9, 1947- MAS9

Picchiotti, Limite sull`Arno: MAS501, 515 - 518

Baglietto, Varazze: MAS502 - 509, 511, 512

CRDA, Monfalcone: MAS510, 513, 514, 525

Celli, Venezia: MAS519 - 522

SACIN, Venezia: MAS523, 524

1 - 10.1937: MAS501 - 525

MAS501 (10.4.1943), MAS502 (8.9.1943 German S626), MAS503 (10.4.1943), MAS504 (8.9.1943 German S627), MAS505 (mutiny 10.4.1944, German SA19), MAS507 (12.8.1944), MAS509 (12.8.1944), MAS512 (24.1.1942), MAS513 (24.1.1942), MAS518 (12.9.1943), MAS522 (mutiny 18.9.1943)

Sweden 2.1940: MAS506, 508, 511, 524 (T11 - 14)

Soviet Union 7.1949: MAS516 (ТК-975 [TK-975]), MAS519 (ТК-976 [TK-976])

12/1944: MAS517

10/1945: MAS515

1949: MAS MT523

6 - 7.1950: MAS1 - 3, NE109, MAS9



Technical data


Displacement standard, t

MAS501: 20.7

MAS502 - 509, 511, 512: 21

MAS510, 513 - 525: 24

Displacement full, t 
Length, m

17.0

Breadth, m

MAS501: 4.30

MAS502 - 509, 511, 512: 4.70

MAS510, 513 - 525: 4.40

Draught, m

1.30

No of shafts

2

Machinery

2 Isotta Fraschini petrol engines

Power, h. p.

2000

Max speed, kts

MAS501, 513 - 525: 42

MAS502 - 512: 41

Fuel, t

petrol 1.25

Endurance, nm(kts)

350(39)

Armament

MAS501: 2 x 1 - 13.2/76, 2 - 450 TT, 6 DC

MAS502 - 525: 1 x 1 - 13.2/76, 2 - 450 TT, 6 DC

Electronic equipmentpresumably hydrophone
Complement

9



Standard scale images


<i>MAS501</i> 1937
MAS501 1937


Graphics


<i>MAS505</i> 1941  
MAS505 1941  


Project history

Type «Baglietto class 500, 1st series»: development of MAS424 which became a prototype of 1st series of "500" class. Under some data, already a number of boats of this series in addition to main Isotta-Fraschini engines were equipped by 2 80hp Alpha-Romeo petrol engines for cruising. Last boat of a series, MAS525 was steel-hulled instead of wooden sister-boats.

Modernizations

1944, MAS MT523: - 1 x 1 - 13.2/76, 2 - 450 TT, 6 DC; + 3 x 1 - 20/65 Breda 1940

1946, MEB1 - 4, 9: - 2 - 450 TT, 6 DC

1947, MAS1 - 4, 9: + 2 - 450 TT, 6 DC.

Naval service

No significant events.