In 1930, Peress revealed the Tritonia suit. By May it had completed trials and was publicly demonstrated in a tank at Byfleet. In September Peress' assistant Jim Jarret dived in the suit to a depth of in Loch Ness. The suit performed perfectly, the joints proving resistant to pressure and moving freely even at depth. The suit was offered to the Royal Navy which turned it down, stating that Navy divers never needed to descend below . In October 1935 Jarret made a successful deep dive to more than on the wreck of the off south Ireland, followed by a shallower dive to in the English Channel in 1937 after which, due to lack of interest, the Tritonia suit was retired.