Spirit (of Glenans)
Well-known member
My boat does tend to move about a bit when on a mooring or anchored, but I have a pontoon berth and rarely anchor, except for lunch stops, so never tried the 'storm jib on the backstay' remedy, however I am reliably informed that when it debuted as a sailing school boat, the instructor did just that on its first night at anchor.Handling your boat close to fixed objects, as opposed to buoys in open water, gives insight as to how the boat responds to sail trim and rudder. This may be different to how she handles under power. If you do not think this is of use or interest, that is your choice. Fortunately, we are all free to use our boats as we wish.
In Denmark it was interesting to see a number of engineless boats sailing into and out of the yacht harbours in fresh conditions and mooring between a pair of stern posts and the pier.
A jib is usually cut with curvature to generate lift. Likewise the mizzen on a ketch. Both will generate sideways force and are likely to cause the stern to sail from side to side. Fishing boats that use steadying sails when riding to their gear have them cut flat, in smaller sizes I have seen alloy or similar sheet material used.