Mariner HANSEN lost on SS Royal Edward 1915

The Royal Edward serving as a troopship was torpedoed in the Aegean Sea 13th August 1915. HANSEN, D. age 21, born in Norway was among those of her Crew who were lost . He is remembered on the Tower Hill War Memorial in London, and with these few facts from the C.W.G.C. register. I am researching the loss of the Royal Edward, and would be grateful if anyone can tell me more about the Sailor, D. HANSEN. Kath