set at 1.8m, drawing 1.05m. Of course with the keel down I draw 2.1m, so I have to know when I am being naughty. But then thats part of watching the wave patterns on the East Coast innit? Cross the Sunk Tower at LWS? Only on a high speed tea tray mate!
I don't normally bother but recently set it at 0.5m, however for some reason it did not recognise the 0. and would go off every time there was a .5 i.e. 1.5, 2.5 3.5 etc. The first time this occured was a little diconcerting as I had just taken my seat in the heads.
I've turned it off and now rely on the feel of the keel cutting a V through the Thames mud instead.