The Silver Fleet is a 1943 British World War II film written and directed by Vernon Sewell and Gordon Wellesley and produced by Powell and Pressburger under the banner of "The Archers".

While pondering his decision, van Leyden walks by a grade school and overhears a teacher telling her class of pupils about Piet Hein, a hero of Dutch lore who captured the Spanish silver fleet and inspired his compatriots to continue fighting for freedom.

In doing so, he undertakes a covert campaign of sabotage against the German Occupation, leaving notes and graffiti signed under his nom de guerre, "Piet Hein".

He returns home to host a dinner party where he persuades several high-ranking Nazi officials to accompany him on the submarine's maiden (and fatal) sea trial.

However, his plans almost go awry when Dutch resistance fighter Bastiaan Peters, sneaks into Van Leyden's house undetected and threatens to shoot him as a Quisling.