The scaled-back service will feature songs with a nautical theme in honour of his love for the Royal Navy.
Music chosen by the Duke includes the hymn Eternal Father, Strong to Save — traditionally associated with seafarers and the maritime armed services.
It was also sung at the funeral of Philip’s beloved uncle, Earl Mountbatten of Burma, who was murdered by the IRA in 1979.
One of two newly-unearthed photos show a young Philip smiling but windswept as he washes dishes on the fishing boat Diligent, when he was around 15.
It was taken in 1937 while he attended boarding school in Moray.
The second picture shows him gazing up at the sails with his right hand on the tiller and a rope in his left.
They were taken by the great uncle of a former student who found them after the Duke’s death.