It were up to 540 POW in Kingston under British responsibility. Probably they were members of the merchant marine and got as civilian internees the statuses of the prisoner of war later. The supply of the prisoners was problematic and was supported by a private American help organization. End 1946 till beginning of 1947 they got repatriated.
A postcard from Jamaica to the USA:
Translation:
Dear Mr Auer. 11-7-42
I like to play mandolin passionately. Since I am not able to get strings here on the island, I would like to ask you kindly to send some to me. With the best greetings Herbert Richert
Jamaica