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S-Boats in the Kriegsmarine 1935 - 1945

Loss of "S 103"

On 04.05.1945 Oblt.z.S. Hans-Wulf Heckel got the order at Svendborg/Fynen to leave harbour with his boat and to sail to Flensburger Förde in order to find out whether the British already had occupied Flensburg.

He left harbour and sailed through Svendborg Sund to the west. In the Small Belt he was attacked about 16.00 by Typhoon-Bombers of RAF Squadron 193 with rocketbombs and had to take two hits. The boat sank in position 54o 16'N 010o 07'E. 18 men of the complement were killed in action. The commanding officer and 11 men, among them six wounded, were picked up by a Danich fisherboat and brought to Mommark. 

 The wreck of the boat is still laying at its sinking-position and was discovered by the Danish professional-diver Åge Jensen ("Dynamit-Åge") from Grenå and there were already taken some parts of the outfitting before the Danish authorities passed aout a diving-ban because of the sharp torpedoes and the ammunition for the guns being still around.

The hobby-historian and collector Flemming Hansen from Fredericia keeps an iron helmet, a signalflag, a tureen, a plate, an oilcan and a engine-telegraph from "S 103" in his collection. 

Iron helmet from "S 103" - Picture: J. Leimgruber Signalflag from "S 103" - Picture: J. Leimgruber
Tureen from "S 103" - Picture: J. Leimgruber Plate from "S 103" - Picture: J. Leimgruber
Underside of the Plate - Picture: J. Leimgruber Oil-Can from "S 103" - Picture: J. Leimgruber
Machine-Telegrapf from "S 103" - Picture: Janka Leimgruber


At Dynamit-Åge's home a torpedo-target-calculator from "S 103" is kept on a provisional pillar, the corresponding optical device (RZA 5) was sold some years ago.

Torpedo-Taget-Calculator from "S 103" - Picture: Frands Frandsen

Torpedo-Taget-Calculator from "S 103" - Picture: Frands Frandsen

Lifevest salvaged from Wreck of "S 103" - Picture: Rainer Brosch

Mister Steffen Schmitt, passionated diver and underwaterphotograph, most friendly made some underwaterpictures of the wreck of "S 103" available to us.

Diver over the Bridge of "S 103" - Picture: Steffen Schmitt

View of the Deck of "S 103" - Picture: Steffen Schmitt

40mm-Gun of "S 103" - Picture: Steffen Schmitt

Bow of "S 103" - Picture: Steffen Schmitt

Marine Life on "S 103" - Picture: Steffen Schmitt

Der dänische Zweig der Firma Teledyne Marine hat inzwischen mit dem Sonar eines ihrer Produkte das Wrack vermessen und die Daten mittels 3D-Software sichtbar gemacht. Die Sonarbilder, von denen unten eines gezeigt wird, werden zusammengesetzt und lassen mittel firmeneigener 3D-Software das Image eines S-Bootes vom Typ S 38 mit Kalotte entstehen.

The Danish branch of company Teledyne Marine has in the meantime surveyed the wreck with the Sonar of one of their products and made the data visible using their 3D-software. From the sonar-pictures, of which one is shown blow. the image of a S-boat type S 38 with scull-bridge is composed. The company has friendly enough sent us the video and the 3D-image on 18.02.2020 for our disposal.

Screenshot from the Video of Company Teledyne Marine

Image composed using 3D-Software of Company Teledyne Marine

Förderverein Museums-Schnellboot has stimulated that the company is surveying also the wrecks off Bagenkop and Rødby Havn in that way and to make them visible in such a way, to make a posiitve identification possible without emloyment of divers.