The Apron The curved strut at the bow of the moulds is called an apron – there will be a similar one at the stern. The curved apron represents the first piece of the actual boat to be positioned on the building frame. We are now underway. Leave a Reply Cancel replyComment (*required)Name (*required) Email (will not be published) (*required) Save my name, email, and website in this browser for the next time I comment. the keel the Moulds