The Packard 1A-2500 is an American V12 liquid-cooled aircraft engine designed by Packard in 1924 as a successor to the World War I-era Liberty L-12. Five aero variants were produced, of which the 3A-2
A preserved Packard 3A-2500 on display at the National Museum of the United States Air Force
A PT boat is a motor torpedo boat used by the United States Navy in World War II. These vessels were small, fast, and inexpensive to build, and were valued for their maneuverability and speed. However
Packard 1A-2500
…Five aero variants were produced, of which the 3A-2500 was the most numerous. Three marine versions, used most prominently in American World War II PT-boats, the 3M-2500, 4M-2500, and 5M-2500, were also derived from it. Boeing TB…
PT-105, an 80' Elco boat, under way
PT-9 in June 1940
Second place PT-31 crossing the finish line during the "Plywood Derby".
Elco and Higgins PT boats, as published in a 1945 training manual