Haverstraw to ride south into New Jersey with two thousand men. Jumping the Hudson had required a circuitous march of more than sixty miles, because once again the Royal Navy had run the river gantlet and had eyes on the ferry crossings farther south. During the sortie upriver, the frigate Pearl and two victuallers had provoked sixty rounds from Magaw’s gunners, some of which struck home with the usual perforated sails, splintered oak, and a busted mizzenmast. But now the vessels sat anchored off Dobbs Ferry.