I do think I see mounting points for a rudder on it though, there looks to be a hole for the rudder just aft of the vertical fin on the underside that it would be attached to, plus the 4 holes (I assume on each side) on that fin for support mountings.
As for dive planes I can't see any sign of mounting points anywhere on the aft of the sub, though there may have been planes just below the torpedo tubes on the bow. There are hole(s) just below the tubes, and a set of brackets above the tube.
I wonder though if this was a full scale prototype that didn't not go any further in development. I still can't see any trace of a propulsion system though, or support brackets for propulsion, though I do wonder what those square cutouts just in front of the rudder fin are.
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