Torpediniere (torpedo boats) crossing speedy the Battleships route. It was an highly tecnical and dangerous maneuver. Rivista H, may 1938. DVX

Reckless maneuvers

A rare shot of the SLC (Siluro a Lenta Corsa = Slow Race Torpedo, called by the crews "maiale", known by the Allies as "human torpedo") in a training. There are a few photos of the SLC in action because at the time it was a secret weapon.
Anyway in the photo it's floating at an upper cruise depth level than the usual: in an operative mission the highest level of floating admitted was that of the pilot mask, and no more. DVX

SLC in training

Rivista H, may 1938, the Regia Marina showing her skills. DVX