The crossing of Washington’s force was to be made in big flat-bottomed, high-sided Durham boats, as they were known, normally used to transport pig iron on the Delaware from the Durham Iron Works near Philadelphia. Painted black and pointed at both ends, they were forty to sixty feet long, with a beam of eight feet. The biggest of them could carry as many as forty men standing up, and fully loaded they drew only about two feet, and so could be brought close to shore. The oars—or sweeps—used to propel the boats were eighteen feet long.

