Hi, Martin, its at Birches Head, sorry don't mean to be rude! I have complained about the bar of mud across the winding hole many times as there is nowhere to turn between Hanley and Milton, despite the three winding holes marked on CRT maps. All are impossible for full length boats to turn. CRT have them down for dredging in 2019, think they are having a laugh! I don't think there are sunk boats in the hole, just hard mud. There are several iron day(?)boats used as bank support on the sides of a stream further towards Milton from Birches Head