Boeing PB-1 "Flying Dreadnought" (Model 50) patrol flying boat

[Triton]

Photograph of Boeing PB-1 flying boat prototype found on eBay.

[link no longer active]

Seller's description:

A beautiful photograph of the one-off PB-1 in flight. The Boeing Model 50 PB-1 and PB-2 was a Naval Aircraft Factory project designed in 1924 by Isaac Laddon to be capable of a San Francisco-Hawaii flight. The project was turned over to Boeing where the PB-1 was completed with water-cooled Packard engines. (Another Navy team, flying the Navy-built PN-9, made the San Francisco-Hawaii flight first in 1925.) The Naval Aircraft Factory replaced the Packard 2A-2500 engines with air-cooled geared P&W Hornet engines in 1928 and the aircraft was designated the PB-2. Although the aircraft was a prototype the U. S. Navy did not distinguish between experimental and operational aircraft at that time so the aircraft was never designated XPB-1 or XPB-2. An original vintage black and white 8 X 10 photograph in perfect condition. This photo, like most of the 4000+ manufacturer, national archives, Air Corps, USAAF, USN, USMC and USCG aviation photos in my collection, came from author and pre-WWII USMC col. Robert Rankin in the early seventies. Col. Rankin acquired them in his research for various aviation articles from the thirties through the fifties.

 

[VictorXL188]

Some more pics of the one off PB-1 flying boat, most from SDASM archives.