The hooker’s rigging had been sabotaged and her rudder cast away, so all she could do was drift where the currents and the winds might take her. This was very much in doubt, for the flows of the Thames and of the Medway here joined to war against the incoming tide in a wild melee of tows and vortices. But they would tend to drift into the center of the estuary, where the united rivers would flush them out to sea. The shore of the Isle of Grain was not so very distant; perhaps there was still time to summon Sergeant Bob, who was rowing about in yonder darkness salvaging the men of the First Company from the inrushing tide. Bob could not have failed to note the burning of the Tor; but he would have no way of guessing that an Infernal Device was bolted to the keel of the hooker.