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  S-Boats in the Federal Navy - Class 142



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S-Boot Klasse 142 ("Zobel")

 Technical Data

Shipyards Lürssen and Kröger
Units built 10
from/to 1960 - 1963
Commissioned from/to 1961 - 1984
Displacement 190 t
Length 42,5 m
Beam 7,1 m
Draught 2,2 m
Propulsion 4 x MB 518 C (each 3000 HP),
Shafts/Propellers 4 - 4
Speed 42 kts
Complement  39 (4 Off, 2 Chiefs, 13 Pettis, 20 Ratings
Armament 4 x Torpedotubes
2 x 40 mm Guns Borfors/L 70
After retrofit 2 x rear-torpedotubes (wireguided SEAL)
2 x 40 mm/L70 Bofors (radarcontolled)
M 20 Firecontrol System

Torpedotube Pinsch-Bamag - Picture: Archives Förderverein

Torpedotube Pisch-Bamag - Picture: Archives Förderverein

Torpedotargetingpillar with tube-targeting-apparatus RZA 5 b - Picture: Archives Förderverein

Firing of an Exercise-Torpedo from tube III - Picture: Archives Förderverein

40 mm Bofors L 70 MEL - Picture: Archives Förderverein

Left: Bottommine G2 (DM 61), right: Anchormine (DM 11) - Picture: Archives Förderverein

Before the boats were fitted with firmly installed equipment for Electronic Warfare (EW), i.e. radar warning systems  (Electronic Support Measures - ESM-equipment), the boats had portable radar-warning-receivers TRACER (VR-2), which in S-Band with ± 4 and in X-Band with ± 2 degrees accuracy could give an indication that enemy emissions were present. At least by a triangulation with two or more boats a rough area could be established in which the enemy was present.

Data-Sheet portable radar-observing-receiver TRACER /VR-2) - Picture: Föreningen T 121 Spica Vänner



The boats were built with an ABC-citadel. 

Later the boats were retrofitted with a Nedinsco- plotting table, a true motion-radar, an optical gyrocontrolled gun- targetting and ESM  (Radar-Search) equipment by ELTRO. 

Retrofitted in 1970 to 1972, thereafter wireguided torpedoes and M 20 Firecontrol System.

"Nerz" carried out trials for different missiles 1963 - 1969. 

S-Boat Class 142 mod ("Zobel")

S-Boat Class 142 mod in the Baltic