Acme Thunderer 60.5 Air Ministry Whistle

A solid brass whistle based on the original Flight Jacket whistle worn by RAF & USAAF aircrews during World War II. Nicknamed the “Ditch” Whistle, it was used by pilots who had been shot down over the ocean to signal passing ships.

This Acme Thunderer features an antiqued finish, marked with the original WWII-era stamping dies from 1939 to 1945—reflecting its long, storied history. It emits a bright, piercing tone with a clear, commanding call that carries over long distances.

Want to hear it in action? Visit our video on the second slide. Or, click play here. (Warning: It's loud!)

Materials:  distressed brass, cork pea

Made by:  Acme Whistles

Made in:  England

Specifications:  approx. 1.8" long

Further Reading:  With roots in Birmingham, England since 1870, Acme Whistles has set the standard for enduring quality and expert craftsmanship. Renowned for their reliability and distinct sound, each whistle is forged from solid metal and hand-finished by skilled artisans—reflecting a heritage of excellence passed down over five generations. 

For more English-made whistles and signaling tools, explore our full Acme collection.