Be warned, 5 or 6 low viz (black 1 litre oil cans) pot markers only 20 metres or so from the west side of the Thorn Channel. These are located on the inside of the bend by the Clashot bouy extending to the red main channel bouys to each side. This is especially dangerous for boats avoiding shipping in the main channel. by staying outside travelling at night. They will have no chance of spotting them, let alone steering round them.