Rig Basics How to Look After Your Mast, Rigging and Sails, is Petrospot s first foray into the sailing and yachting sector. Written by Kim Skov-Nielsen, a hugely experienced round-the-world yachtsman and active marine surveyor, this book provides a concise, informative and clearly-written outline of what an owner or operator must take into consideration when looking after the mast, rigging and sails. It is also a highly useful guide to what a surveyor should be looking at when surveying a rig.