I am still working my way through the WW1 Shetland Roll of Honour. One casualty is listed in the book as "lost by enemy action on 17 February 1917" and the ship is named as HM Transport Mansurel. CWGC has the ship's name as Mansusi. I have so far been unable to find either of these, or a similar name, on that date. Grateful for any help.