Thanks to https://thames.me.uk/sailing1817.htm and on Google \books THE SWIN AND KING’S CHANNEL Buoy on the Middle, No 3, black3 fathoms starboard. Whitaker Spit buoy, red, with staff and triangular vane3 fathoms larboard. South buoy of the Swin Spitway, blacklarboard. Gunfleet beaconlarboard. Gunfleet buoy, No. 9, black4 fathoms larboard. Middle hook […]