12 Hours Trapped in a Submarine - I Blew Up Our E7, by Ch Petty Off Bob Sims | 5 September 1915 | Episode 97

E.7, under Lt.-Commander Cochrane, was famous for her exploits in the Sea of Marmara during the month of July 1915, when she destroyed much enemy shipping, blew up Turkish powder mills and munition sheds and damaged two troop trains.

On September 5, while engaged on a similar exploit, the E.7 was trapped in a net under the Dardanelles. What happened forms the subject of this thrilling chapter by a petty-officer who was in the submarine and endured this alarming experience.

The exploits of the submarine E.7 and her sister submarines during the hazardous days of 1915 in the Dardanelles are amongst the most thrilling and stirring stories of the British Navy in the Great War. Ex-Chief Petty-Officer Sims served in the E.7 and was aboard her on her last tremendous adventure.