Many a boat is waiting for a new owner with zest, slowly deteriorating somewhere in a storage ground - but careful planning and preparation are the nuts-and-bolts of any yacht refit if it shall become a success story in the end. First, a detailed analysis on the state of the boat and its accessories is fundamental. It is important to document the actual state of the different areas of the boat carefully and in a well-structured way. This will enable you to define the required measures to be undertaken during refit.
Under water area: general condition (just new anti-fouling required or complete renewal of under water protection required), osmosis treatment, condition of keel (e.g. rust, GRP layer), steering system, drive, propeller;
Hull: GRP, steel, wood? structural damage to be repaired? Outer layer: original gel coat or coated, just polish or new coating required?
After cleaning the soiled surfaces, carry out a revision for corruption or damages to the entire surface area. Sometimes it is useful to have the assessment of the surface done by a specialist. At this point the decision is made whether polishing is enough or a new coating is required. A new coating will cause significantly greater costs than just polishing which you can usually do by yourself. Polishing of a sample section gives you an impression of the results to be expected.
The underwater hull should be inspected in great detail. The question whether an osmosis treatment or prevention needs to be considered for a GRP hull is of great importance and requires an informed answer. When to many old anti-fouling layers have been applied in the past, the entire old coating should be removed. Ideally, the old paint just needs to be sanded or even cleaned. It depends on the material used before.
Repair of gelcoat damage
Unfortunately, an ugly scar, a small chipping or a small crack in the gel coat can occur faster than you think and is very annoying. More so, because it is not only the perfect appearance of the yacht that is affected, but maybe also the dark laminate lying underneath the gel coat. Moisture can penetrate into the laminate through small cracks in the outside surface and eventually damage its strength. Smaller gel coat damages can be repaired with little effort by yourself.
Polishing the hull
Painting the waterline
Minor damage to the hull
Repair of laminate damage
The repair of laminate damage turns out to be more complicated andtime consuming. The repair area is set off and framed with adhesive tape. The edges of the damaged area need to be scarfed into a V-shape. Trim the glass fibre mats to the right size, start with the smallest piece and gradually increase, producing as uniform overlaps as possible. Completely saturate glassfibre mats with polyester resin. The laminate must appear uniformly transparent in the end. White spots are evidence of trapped air, which must be vented immediately, as this would facilitate later osmosis. The new laminate should slightly surpass the original shape of the damaged area to have sufficient material for grinding it down to an even surface in the end. Finally seal the repaired conclusively.
Yacht Maintenance - How to keep your boat ship-shape