Wilhelmshaven, Germany 1 October 2016
Libelle-class. Project 131 boat number 423. Commissioned on 28 September 1976 and decommissioned on 16 October 1989. Displacement 28 tons and as dimensions 18,9 x 4,5 x 1,70 metres. With 3 shafts, 3 screws, 3.600 hp horsepower and a speed of 48 knots. Crew numbered 5 men. Armament consisted of 2-21” torpedo tubes, (stern) 1-23cm ZU23 twin gun and 2 mines.
