The Port Victoria P.V.9 was a British single-seat biplane floatplane fighter of the First World War.
In mid-1917, the RNAS Marine Experimental Aircraft Depot at Port Victoria on the Isle of Grain was instructed to build a new single-seat floatplane fighter as a possible replacement for the Royal Naval Air Service (RNAS)'s Sopwith Babies.
The new aircraft was to combine the good manoeuvrability and pilot view of Port Victoria's earlier P.V.2 floatplane with superior speed.
The fuselage, wider than that of the P.V.2, was mounted between the upper and lower wings, almost filling the inter-wing gap, giving an excellent view for the pilot.
[3][4] No production followed, however, as the availability of Sopwith Pup and Camel landplanes which could operate from platforms aboard ships, removed the requirement for a floatplane fighter.