This agreement was ratified on 27 March 1941 after which the United States built a seaplane base on the island.

[3] A total of 2,800,000 cubic yards of dredging was necessary to remove shoals from the seaplane runway and to deepen the anchorages and channel approaches to the piers.

Gasoline storage, totaling 75,000 gallons, was provided in eleven underground steel tanks.

[4]Shortly after the war the base was abandoned by the United States, which nonetheless retained a lease on the island.

The United States Department of State website states: By an exchange of notes on August 7, 1962, between the High Commissioner for the United Kingdom in Jamaica and the Prime Minister and Minister of External Affairs and Defence of Jamaica, the Government of Jamaica agreed to assume, from August 6, 1962, all obligations and responsibilities of the United Kingdom which arise from any valid instrument (including any instrument made by the Government of the Federation of The West Indies by virtue of the authority entrusted by the Government of the United Kingdom).