Why? those things move shipping containers.
Worrying? Not at all, all part of a normal day for me!
Must have been the angle, looks a lot better in the pic you gave. It was only a light haerted post with a pic here anyway, not sure why some get so uptight and have to be ultra critical in pretty much every post on here
On the bright side my OD has just gone off for a service, engine to be done later in the week, new tow bar i have nearly finished (just the electrics to do) mooring ready, so boat in water hopefully to get some good use