great photo, not seen that beforeJAZZ said:I can't confirm this is a German design - but here is the life sized mock-up and cutaway
If you’re referring to the very slender mast at the aft port corner of the access hatch in the top of the sail (fin) to the wet/dry lockout chamber, my guess is that it’s an HF communications whip aerial. The search periscope is clearly identifiable as such, penetrating the hull to terminate in the classic observer’s eyepiece. I seem to remember reading somewhere that an alternative load in place of the pictured CosMoS CE2F chariot was one, or possibly two heavyweight torpedoes (mentally pictures a brace of Spearfish torpedoes being used as auxiliary propulsion). However, I can’t remember where I read that, and I could be wrong. Certainly I agree that it’s very unlikely to have two ‘scopes.Surprised at the inclusion of an attack periscope in a vessel with no apparent attack capability.
My apologies. My cutaway (the grayscale one) doesn’t appear to show one, although it’s hard to be sure given the small size of the original and the large halftone dots. As you said, close inshore you’d want to be as sneaky as possible.