ESTABLISHED TRACKS - STANTON AND LEVERBURGH CHANNELS There are many dangers bordering the narrow channels. Although some of the leading marks are inconspicuous and difficult to identify it is important for vessels to keep close to the established tracks indicated. Where it is not possible to visually follow the tracks then alternative methods of position-fixing must be used. For details of the tracks designated (A) to (G), see Admiralty Sailing Directions. The tidal streams run strongly through the channels and vessels are recommended to transit at, or near, high slack water.