Basic Details Surname Tupper Forenames Henry Gender Male Information stated on memorial War First World War (1914-1918) Served or died Died Notes Sunk Off Chile With All Hands Primary Service As stated on memorial Service (Primary - Stated) Navy (RN) Unit (Primary - Stated) HMS Monmouth Rank / Title (Primary - Stated) Coast Guard (Boatman) Our References Service (Primary - Our reference) Royal Navy Unit (Primary - Our reference) HMS Monmouth Rank / Title (Primary - Our reference) Able Seaman Death and Burial details Manner of death as stated Unknown