The Snapshots in Time Collection
U.S. Navy Douglas PD-1 Patrol Biplane Flying Boat '3-P-9' on Beaching Gear, Panama Canal Zone
A U.S. Navy Douglas PD-1 patrol biplane flying boat, marked '3-P-9,' sits on its beaching dolly at a ramp in the Panama Canal Zone. Aircraft like this conducted long-range maritime patrol duties, helping protect the strategically vital Panama Canal during the interwar years and into World War II. Project: 218476