For nearly a year I have been disturbed by an incredible banging noise which sounds like someone hitting the hull with a steel hammer whenever it is windy. I have been out at 3am in stormy winds in a dressing gown trying to determine what the noise is.
Everything is tied down. Everything. In the end, I thought I had got the noise down to the gangway catching. The issue is that no noise can be heard outside, only inside.
Tonight I solved it. Mainly because the tide was out and that mean no gangway movement. It turns out that two of the arms that hold the nets on the helipad move still. And in the wind, now and again, they get push in and bang.
A few wedges in the gaps and hey presto. No more banging!