The governors and all the officials, particularly of the Custom House, resented the action of the naval officers; but the vigilance of the latter so seriously interrupted the forbidden traffic under American colors, that recourse was had to giving British registers to the vessels concerned, allowing them to trade under British flags.

This, however, was equally contrary to the Navigation Act, which forbade British registry to foreign-built ships, except when prizes taken in war; and the disguise wast too thin to baffle men like Collingwood and Nelson.

The latter reported the practice to the home Government, in order that any measures deemed necessary might be taken.

Meanwhile he patiently persisted in turning away all vessels, not British built, which he encountered, confining himself for the time to this merely passive prevention; but finding at last that this was not a sufficient deterrent, he gave notice that after the 1st of May, 1785, he would seize all American vessels trading to the islands, "let them be registered by whom they might." Accordingly, on the 2d of May he arrested an American-built schooner, owned in Philadelphia and manned entirely by Americans, but having a British register issued at the island of St.Christopher.
The Crown lawyer was now called upon to prosecute the suit.

He expressed grave doubts as to a naval captain's power to act by virtue simply of his commission, the sole authority alleged by the captor; and, although he proceeded with the case, his manner so betrayed his uncertainty that Nelson felt it necessary to plead for himself.