NAVYPEDIA

Ships

Names	Builders	Completed	Losses	Transfers	Discarding
MAS397 (ex-Cingallegra) MAS398 (ex-Cutrettola) MAS399 (ex-Procellaria) MAS400 (ex-Scricciolo)	Baglietto, Varazze: MAS397-400	1920: MAS397 1924: MAS398 - 400	none	none	1935: MAS397 - 400

Technical data

Displacement normal, t
Displacement full, t	MAS397: 30 MAS398 - 400: ~27
Length, m	21.2
Breadth, m	4.24
Draught, m	1.22
No of shafts	3
Machinery	3 Isotta Fraschini petrol engines / 2 Rognini electric motors
Power, h. p.	1600 (outer shafts) + 300 (central shaft) = 1900 / 10
Max speed, kts	MAS397: 28.2 / 4 MAS398 - 400: 33 / 4
Fuel, t	petrol
Endurance, nm(kts)	110(33) / 20(4)
Armament	MAS397: 1 x 1 - 76/40 Armstrong 1916, 1 x 1 - 6.5/115, 4 - 450 TT, 4 DC MAS398 - 400: 2 x 1 - 6.5/115, 2 - 450 TT, 10 DC
Complement	12

Standard scale images

Project history

Besides petrol engines MTBs were equipped with electric batteries and 10hp electric motors for 4kts silent crouching. It was supposed, that these boats would make maximum 33kts speed, but in practice they have appeared considerably slower.

Modernizations

1924, MAS397: - 1 x 1 - 76/40, 2 - 450 TT; + 1 x 1 - 6.5/115, 10 DC at all.

Naval service

No significant events.