PV-1 (PV-2) Ventura HarpoonLockheed PV 1 Harpoon airplane model. The Lockheed 37, originally built for the RAF and named Ventura, was then built for the US Army Air Force and the US Navy, being called the PV 1 Ventura for the Navy. The PV 1 was the first version for the US Navy, generally as Ventura MK II, but with reduced defensive armament, modified bomb bay to carry bombs, depth charges or one torpedo, and with search radar, late production had provision for HVAR rockets on