The Port Victoria P.V.2 was a British prototype floatplane fighter of the First World War, designed and built at the Royal Naval Air Service's Port Victoria Marine Experimental Aircraft Depot on the Isle of Grain.
The upper wing, however, while giving excellent upwards view to the pilot, gave a poor downwards view of the pilot, particularly during landing, while the Davis gun had lost favour with the Admiralty as an anti-Zeppelin weapon.
The P.V.2 was therefore rebuilt as the P.V.2bis with a revised, longer span upper wing mounted 12 inches (0.30 m) above the fuselage and the Davis gun replaced by two Lewis guns mounted above the wing, firing over the propeller.
[2] While the P.V.2bis again showed excellent handling, the RNAS's requirement for a floatplane anti-Zeppelin fighter had lapsed, and no production was ordered.
[2] Data from The British Fighter since 1912 [1]General characteristics Performance Armament