Basic Details Surname Jarvis Forenames Dennis Gender Male Information stated on memorial War Military Service Served or died Died Primary Service As stated on memorial Unit (Primary - Stated) HM Submarine Affray Sub-unit (Primary - Stated) Royal Marines Rank / Title (Primary - Stated) Private Our References Service (Primary - Our reference) Royal Navy Unit (Primary - Our reference) HM Submarine Affray Rank / Title (Primary - Our reference) Private Death and Burial details Country of death English Channel Year of death 1951 Month of death April Day of death 16 Manner of death as stated Submarine sank as a result of an accident Manner of death reference Missing