Aircrew forced down at sea used surface flares like this one from NC-3 to signal their position to rescuers.
Gift of Mrs. Sara Hargraves
Country of Origin: United States of America
3-D Test: 61 x 7cm (24 x 2 3/4 in.)
OVERALL - WOOD
Octagonal, filled with wax like substance, weighted end, gray, grooved at top