Admiral Sir Frederick Charles Learmonth KBE CB (14 January 1866 – 3 June 1941) was a Royal Navy officer.

At that time he was serving in the Royal Yacht Victoria and Albert[1][2] He started surveying in 1890 in Borneo and the Anamba Islands under Arthur Mostyn Field in HMS Egeria.

[6] In 1907, Learmonth surveyed the Gardner Canal on the British Columbia Coast in preparation for a proposed terminal of the Grand Trunk Pacific Railway at Kitimat.

[2] The adoption of the convoy system meant that large numbers of vessels would be concentrated at the assembly ports, and were vulnerable to U-boat attack until defences were established.

[12][2] During this period four new survey ships were commissioned for working in home waters, converted from Aberdare class minesweepers.

[13][14] Learmonth proposed that new ships should also be ordered to replace the old and very unsatisfactory sailing vessels in use overseas, but in the end existing 24-class sloops were converted.