Basic Details Surname Knapp Forenames H J Gender Male Information stated on memorial War Military Service Served or died Died Primary Service As stated on memorial Service (Primary - Stated) HM Submarine Service Unit (Primary - Stated) G8 Rank / Title (Primary - Stated) Boy Tel Our References Service (Primary - Our reference) Royal Navy Unit (Primary - Our reference) HMS G8 Rank / Title (Primary - Our reference) Boy Telegraphist Death and Burial details Year of death 1918 Month of death January Day of death 14 Manner of death as stated Lost their lives in Submarines or on Submarine Service