Technology and Operations
This forum is for discussing technological & operational matters pertaining to U-boats.
RE: Achilles heel outside of pressure hull?
Posted by:
Ken Dunn
()
Date: April 13, 2001 09:57PM
Hi Tom and Ger,
On 10/12/1942 U-126 was undergoing a depth charge attack and suddenly at 160 meters the boat started sinking out of control. The Chief Engineer, OLt. (Ing.) Hans Schaumlöffel, was finally able to stop the descent at 240 meters by using almost all of her compressed air. There was just enough for one attempt at surfacing left. It took great skill to stop the descent and get her to the surface. When they finally got to the surface they found that some of the torpedo storage tanks outside the pressure hull had been cracked by the depth charges and filled with water and that is what almost sunk U-126. Later in the war the external torpedo storage tanks were discontinued at least partially because of this problem. Another part of the problem was that without control of the air it became too dangerous to surface and extract the spare torpedoes from their containers and load them into the boat. On another occasion, U-126 was caught on the surface by an aircraft with a torpedo from one of the external containers half way in the forward torpedo-loading hatch. She was able to hold the plane off with her anti-aircraft gun while she finished loading the torpedo but the pucker factor must have been tremendous. They couldn’t dive with that torpedo in the hatch and loading a torpedo took quite a while.
Regards,
Ken Dunn
On 10/12/1942 U-126 was undergoing a depth charge attack and suddenly at 160 meters the boat started sinking out of control. The Chief Engineer, OLt. (Ing.) Hans Schaumlöffel, was finally able to stop the descent at 240 meters by using almost all of her compressed air. There was just enough for one attempt at surfacing left. It took great skill to stop the descent and get her to the surface. When they finally got to the surface they found that some of the torpedo storage tanks outside the pressure hull had been cracked by the depth charges and filled with water and that is what almost sunk U-126. Later in the war the external torpedo storage tanks were discontinued at least partially because of this problem. Another part of the problem was that without control of the air it became too dangerous to surface and extract the spare torpedoes from their containers and load them into the boat. On another occasion, U-126 was caught on the surface by an aircraft with a torpedo from one of the external containers half way in the forward torpedo-loading hatch. She was able to hold the plane off with her anti-aircraft gun while she finished loading the torpedo but the pucker factor must have been tremendous. They couldn’t dive with that torpedo in the hatch and loading a torpedo took quite a while.
Regards,
Ken Dunn