'FP' was the designation of Allied military ferry convoys (together with a numerical suffix) plying the route between the UK and Norway (April/May 1940).
The first of these three trooping convoys was FP.1 of 17/17 April 1940 from the Clyde river to Scapa Flow in the Orkney islands group for onward passage to Norway with the 5,079-ton French armed merchant cruiser El Kantara carrying 599 troops, 5,818-ton French armed merchant cruiser El Mansour carrying 656 troops, 20,175-ton British Franconia carrying an unknown number of troops, and 10,172-ton French armed merchant cruiser Ville d’Oran carrying 1,011 troops.
The last of the convoys was FP.3 which departed the Clyde river on 1 May with the 14,287-ton Polish Batory, 14,825-ton French Chenonceaux carrying 2,290 troops, 13,291-ton French armed merchant cruiser Colombie carrying 979 troops, 20,119-ton British Duchess of Atholl carrying an unknown number of troops, 21,833-ton British Empress of Australia carrying an unknown number of troops, 16,243-ton British Lancastria carrying an unknown number of troops, 12,220-ton French Mexique carrying 2,006 troops, 17,702-ton British Reina del Pacifico carrying an unknown number of troops, 11,030-ton Polish Sobieski carrying an unknown number of troops, and 9,889-ton French Ville d’Alger carrying an unknown number of troops.