Talking of bad vis ,I had conversation with a dive buddy (scuba), over xmas. the Gwynt y mor off shore wind farm came up. They are on the north wales coast off Rhyl. If you are un aware there are 160 - 50m? Turbines .some only 5 miles of shore .They are very big the bases are 5-10? m across. Anyway with the big tidal movements considerable turbulence is formed under water resulting in .....yep churning up the silt bottom, being carried both ways to Liverpool and to Anglesey .Don't think the viz has ever been great on the north side of the `mon`as it is with the straights' doing its bit and lots of shallow areas.So its not looking good and it can only get worse! I have scuba dived a wreck amongst the turbines two years ago vis was not good then .Any thoughts any one...... bar come Down the Llyn!