|9-P-1 (BuNo 0137?)
This is actually an 18-plane trans-Pac from San Diego to Pearl Harbor on 1938-Jan-18. VP-9 had six PBY-1s (BuNos 0137-0142) and VP-10 had twelve PBY-2s. Note the notched elevators on the PBY-1s. I can't see top-side carburetor air-intakes (PBY-3) on any of these planes. That's not a ship near the horizon, but a large flaw in the photo.
Flt led by Capt Marc Mitscher, ComPatWing ONE
48 A/C - largest grp of A/C to fly 3,000 mi.
(Photo from the R.L.Lawson collection, courtesy of the Nat'l Museum of Naval Aviation)