Now I confess to being confused. Having check this afternoon, there is only one bolt on the mast which I the one I have been calling the pivot pin as it straight through the mast about a third down from the deck. There are no other bolts/fixings.
Reading the comments above and the extract from WIT, am I right in thinking there should be a proper mast step at the foot of the mast with a pin for and aft to prevent movement of the foot of the mast. There is nothing that I would consider to be a mast step as seen on dinghies I have sailed before. More importantly, there is no evidence there was one resulting in pivot pin and standing rigging being the only stability to the mast.
Increasingly thing this is not right