 He was President of Thames Rowing Club from 1911 until his death and was also the first President of the Remenham Club, from 1914 until 1938.In June 1902 he was on board German torpedo boat "S. 42" when it sunk off Cuxhaven, after it was accidentally run over by the steam ship "SS Frisby".Guinness had been granted passage in the torpedo boat from Heligoland to Cuxhaven, returning from the Dover to Heligoland yacht race, and survived unharmed, though the captain and several German crew members drowned.