Hello everyone,
As a break between other projects, I'm taking a detour back to small boats.
This thread will cover the few classes of locally developed small torpedo boats in East German Navy service in the 1950s to 1980s.
Though the evolution of technology would create widely different boats over the years, all generations of East German torpedo boats share the same basic concept of the lightest and cheapest hulls meant to attack
en masse a single surface target, according to tactical concepts developed during WW2.
While the Soviet industry moved towards ever larger boats with heavier torpedo payloads, the East Germans' decision to keep the displacement to a minimum served both to drive costs down by making the boats easier to manufacture, and reduce the manning requirements. Most classes were developed with bolt-on benches to carry combat swimmers, making further use of the high speed of the torpedo boats to insert divers closer to their targets.
As a consequence of their light displacement, the light materials used in construction and their intensive use in service, the lifetime of these boats did not exceed 10 years across all classes.
One other specificity shared by all classes is the rearward ejection of forward-running torpedoes. While most earlier and contemporary torpedo boats fired their weapons forward from tubes located above deck, all the boats presented here had their tubes under the stern, open to the rear, and dumped the torpedoes in their wake before turning away from the target. On such small boats, this solution helped simplify construction and keep the center of gravity down.
Let's start at the end, with the last class to enter service.
Work on the first prototype of Project 131 "Libelle" (Dragonfly) KTS was started in October 1971, the boat being handled to the Volksmarine for trials in 1972 and followed by two more prototypes. Series production then saw 30 more units built between 1974 and 1977, numbered 401 to 430.
In service, the boats were split in two light torpedo boat brigades, each made up of three groups, within the 6th Flotilla based in Bug/Dranske on the island of Rügen.
Following the established pattern, the boats carried two anti-ship torpedoes inside the stern of a mostly classical planing hull, propelled to 52 knots by three Soviet M-50F diesels on three shafts. A quixotic amount of self-defense was provided by a single rear-firing, manually-operated mount for the ubiquitous ZU-23/2 twin 23mm AA gun. If the boat was engaged by another adversary than their target, the best defense was of course in their speed and agility.
Conceptually obsolete and structurally worn out, the first boats of the class were removed from service in the mid-1980s, some soldiering on as diver transports until the reunification of Germany. Naturally, none were taken over by the FRG for further service, but a few were preserved for display in museums within Germany.