Just finished Steel Boat, Iron Hearts by Hans Goebeler who served on the U-505 which was captured 1n 1944 by the USS Guadalcanal. Hans later moved to the Chicago area to be close to the boat now on display at the museum of science and industry. He became a docent at the museum and often met with members of the capture team and members of his own crew. It is type IX and worth the visit. The book tops Iron Coffin as herr Goebeler was enlisted and has no axe to grind in his strait-forward recounting of his boat and crews' story.