An item referred to the magazine Le Yacht which reported that the Italian submarine Delfino performed secret experiments. She passed the Bay of La Spezzia while submerged and successful fictitious torpedoed the Varese. The Delfino was fitted out with a new telescope invented by Albrizzi called cleptoscope providing a angle of 60 degrees against the 304 degrees of the French periscope which moreover supplied an imperfect image.
