Cambridgeshire Police Federation has paid tribute to DCI Kenneth Hunt on the anniversary of his death.
Kenneth was driving back to Force HQ when he lost control of his car which left the road and crashed into a Fenland waterway near Ramsey on 23 October 1981. He was 48.
Branch chair Liz Groom said: “Fallen colleagues and the sacrifices they have made must never be forgotten.
“Our thoughts today are with Kenneth’s family, his friends and his former colleagues.”