Updated: Hatch
The original drawing was base mainly on the United States Navy USS Gato (SS-212) hatch and a few pictures of U-995 hatch I had at the time. With far better pictures of the hatch on U-955, that I got today. I have made a few changes to correct the drawing to a German style hatch.
However, half way through the drawing today I realizes the were is a different locking system for the Tower Hatch & the Access hatch to the tower.
* Added brass contact rings to hatch rings.
* Added a O-ring to the contact rings
* Added split pins.
* Added a check valve to only the access hatch to the tower, must be used to check if there water in the CT.
* Remove handle from hatch handle.
* Added completely different locking system.
* Corrected the hatch hinge.
Newer -German Style Older - USN/German Style