U-32 was the first non-nuclear submarine to stay submerged for two weeks. @ANMDT et al.
Nilgiri Experienced member Moderator Aviation Specialist Messages 9,982 Reactions 121 20,256 Nation of residence Nation of origin Oct 25, 2020 #1 U-32 was the first non-nuclear submarine to stay submerged for two weeks. @ANMDT et al.
