His Majesty's Submarine "Thetis" (Inquiry Report) 45. Commander Sir Archibald Southby asked the Prime Minister whether it is proposed to publish the report of the Tribunal of Inquiry into the loss of His Majesty's Submarine "Thetis"? The Prime Minister (Mr. Chamberlain) Yes, Sir. The report will be presented to Parliament and copies will be available in the Vote Office on 4th April.