Eighteen metres in composite is right at the upper limit of what production methods can achieve, and the yachts built there are engineered rather than assembled. At this length the laminate is carrying loads that demand calculation, and the difference between a properly engineered hull and a scaled up one is unmistakable. The Yacht Collection lists eighteen metre GRP sailing yachts.
The construction is serious. Panels are large enough to require substantial foam or balsa coring, unidirectional and biaxial reinforcement is placed along computed load paths, and the keel structure is an engineered assembly laminated deep into the hull. Vacuum infusion and post curing are standard at yards working at this scale, because consistency across a laminate of this area cannot be left to hand layup.
Composite at eighteen metres brings real advantages over aluminium or steel. There is no corrosion to manage anywhere in the structure, lower weight for the same stiffness, better acoustic behaviour and repairs available in far more boatyards around the world. Survey should be scaled to the vessel, with percussion testing and moisture readings across an enormous area, detailed keel structure inspection, chainplate landings, coring around every fitting, plus rig certification and full plant assessment. Expect a documented maintenance programme rather than a service book, and read it in full. Browse the eighteen metre GRP sailing yachts available and speak to our brokers.
