The longboat balked mulishly as it scraped its keel on the sandy bottom every few yards. Sergeant Bob became exasperated, then profane, to the point where Sir Isaac became visibly offended. Half of the dragoons divested themselves of their powder-horns and granadoes, and vaulted over the gunwales to land waist-deep in the channel. This lightened the boat’s load enough to get its keel out of the muck, and it enabled them to move it along by pushing on it with their shoulders, as if it were a gun-carriage mired in Flanders. "Take advantage of the shallow water," Barnes said approvingly, "we’ll not have it much longer." The colonel had mostly been keeping an eye on the parapet, clearly worried about snipers. Isaac’s gaze was fixed on the hooker, which was now rolling freely on the bank of the channel—the direction of the tide had reversed! The sergeant was attending to his men.