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FIGHTING SHIPS OF THE WORLD
POLAND
COASTAL FORCES
S4 motor torpedo boat (1941 / 1943)


Ships


Names Builders Completed Losses Transfers Discarding

S4 (ex-MTB437)

British Power Boat, Hythe, UK: S4

1943 // 7.1943: S4

none

UK, 4.1944: S4 (MTB437)

none


Technical data


Displacement standard, t

38

Displacement full, t47
Length, m21.9
Breadth, m6.27
Draught, m1.28 deep load
No of shafts

3

Machinery

3 Packard petrol engines

Power, h. p.4050
Max speed, kts

40 trials

Fuel, t

petrol 1250 l

Endurance, nm(kts) 
Armament

1 x 1 - 40/39 2pdr QF Mk VIII, 1 x 1 - 20/70 Oerlikon Mk II/IV, 2 x 2 - 7.7/94, 2 - 4 DC

Electronic equipment

type 286PU or type 291U radar

Complement15


Standard scale images


<i>S4</i> 1943
S4 1943


Project history

MGB in hull of MTB, in 1944 boat was converted to MTB.

Modernizations

1944, S4: - 1 x 1 - 40/39; + 2 - 533 TT

Naval service

No significant events.