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COASTAL FORCES
"SVAN 12ton modified" type ("A" group) motor torpedo boats (MAS158) (1917), "SVAN 12ton modified" type ("A" group) motor gun boats (MAS161) (1917 - 1918)


Ships


Names Builders Completed Losses Transfers Discarding

MAS158 - 202

Picchiotti, Limite sull`Arno: MAS158 - 165

Gallinari, Livorno: MAS166 - 175

Piaggio, Sestri Ponente: MAS176 - 200

Foggi & Agretti, Livorno: MAS201, 202

1917: MAS166

1918: MAS158 - 164, 167 - 202

1919: MAS165

MAS160 (22.5.1927), MAS166 (12.11.1918), MAS178 (12.9.1930)

none

1921: MAS167

1922: MAS168, 169, 176, 177, 182, 201, 202

1925: MAS162, 163, 170 - 175, 180, 181, 183 - 187, 191 - 199

1926: MAS158, 159, 164

1929: MAS161, 165, 189

1930: MAS190

1931: MAS179, 200

1938: MAS188



Technical data


Displacement normal, t

11.2

Displacement full, t

12.1 - 12.2

Length, m

16.0

Breadth, m

2.63

Draught, m

MAS158 - 165: 1.12

MAS166 - 202: 1.10

No of shafts

2

Machinery

MAS158, 159, 164: 2 Sterling petrol engines

MAS160 - 163, 165 - 202: 2 Fiat petrol engines

Power, h. p.

MAS158, 159, 164: 400

MAS160 - 163, 165 - 202: 480

Max speed, kts

MAS158, 159, 164: 23

MAS160 - 163, 165, 176 - 200: 25

MAS166 - 175: 24.5 - 26.5

MAS201, 202: 24

Fuel, t

petrol

Endurance, nm(kts)

MAS158, 159, 164: 180(20)

MAS160 - 163, 165: 200(21)

MAS166 - 175: 170(23)

MAS176 - 202: 200(22)

Armament

MAS158 - 160, 166 - 168: 2 x 1 - 6.5/115, 2 - 450 TT, 6 DC

MAS161 - 165, 169 - 202: 1 x 1 - 57/43 N1887, 1 x 1 - 6.5/115, 6 DC

Complement

8



Standard scale images


sister-boat <i>MAS95 1917</i>
sister-boat MAS95 1917


Project history

So-called "12-ton" boats designed by A. Bisio (SVAN) and built by different builders in 1916-1918. Boats differed from each other by armaments and engines. Some (1, 4 and 6th series) were extra equipped with 10hp electric motors for silent running.

Modernizations

None.

Naval service

No significant events.