Basic Details Surname Knights Forenames Derrick Wilfred Gender Male Information stated on memorial War Second World War (1939-1945) Served or died Died Primary Service As stated on memorial Unit (Primary - Stated) HMS Sennen Rank / Title (Primary - Stated) Able Seaman Our References Service (Primary - Our reference) Royal Navy Rank / Title (Primary - Our reference) Able Seaman Death and Burial details Year of death 1942 Month of death January Day of death 16 Manner of death as stated Drowned Manner of death reference Other