With reference to Gordon's first item in the thread, 'Launch at 6.30 and decided to check ot the newly installed bilge pump and live bait tank, both worked perfectlyand with a lovely anti clock wise flow'.
Now I thought I had this sorted that the mackerel swim anticlockwise so the water goes clockwise. If I've got this wrong, that explains a lot. Can someone give me the difinitive answer to this please.
Terry.