Basic Details Surname Washington Forenames Sidney William Gender Male Information stated on memorial War Military Service Served or died Died Notes Account of the loss of the submarine. https://rnsubs.co.uk/articles/lost-found/supergun.html Accessed 14/11/2024 Primary Service As stated on memorial Service (Primary - Stated) Not stated on memorial Unit (Primary - Stated) H.M. Submarine M.1 Rank / Title (Primary - Stated) Not stated on memorial Our References Service (Primary - Our reference) Royal Navy Unit (Primary - Our reference) HMS M1 Death and Burial details Country of death At sea Country of burial No known grave Year of death 1925 Month of death November Day of death 12 Age at death 27 Manner of death as stated Lost his life on board HM Submarine M.1 Manner of death reference Other