DIRECT SHIP MAIL BETWEEN ST.THOMAS-FREDERIKSTED-ST.THOMAS
The emphases on transit mail between the islands of St.Thomas and St.Croix has mostly centered on the St.Thomas til Christiansted route via the "Vigilant" but many other ships were used for carrying mail. There was an active direct ship route between
St.Thomas and Frederiksted . These letters will only show St.Thomas and Frederoksted postmark and the cancels may have two days separation.