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14
MAINTENANCE
Studio ti 03312 540-04usa
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14.6 GENERAL MAINTENANCE
14.6.1 Gel-coat cracks
When underway, some structural parts of the yacht are subject to
bending, and create tension or compression stresses in fiberglass and on
gel-coat.
The differences in the modulus of elasticity of gel-coat and fiberglass can
cause small, hairline cracks on the gel-coat surface, in particular in the
more heavily loaded spots, e.g., near cleats, handrail stanchion bases
and at radius angles in the moldings.
These cracking patterns, however, do not generally compromise the
mechanical and structural strength characteristics of the fiberglass
moldings.
14.6.2 Gel-coat voids
In some areas of the yacht, bubbles may generate on the gel-coat, which
can break exposing the fibres underneath. The drawback occurs
generally in vicinity sharp angles, and depends on air bubbles that, during
fabrication, remain entrapped between fibreglass and gel-coat, although
quality checks are carried out by specialised personnel.
Broken gel-coat bubbles are easy to repair by filling the voids and
touching up with gel-coat that can be requested to the Service
Department of the Shipyard.
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WARNING
The alteration of colour and brightness in correspondence of areas
which are highly exposed is considered as normal. The necessary
polishing has to be considered as normal maintenance.
MAINTENANCE
At least once a month perform an accurate cleaning of all fibreglass
parts. At least once every six months check the status of the fibreglass.
When necessary, but at least once every two years, polish all fibreglass
parts.
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CAUTION
In case of particularly persistent dirt, wash always by using neutral
products. Do not use products containing ammonia that turn the surface
yellowish; if necessary use powder products dissolved in water.
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CAUTION
To remove possible gel-coat, do not use sandblasting methods that
may damage the surface of the anti-osmosis resin applied and could
expose fibres. As suggested by gel-coat Manufacturers, use suitable
products or, as an alternative, wet sand.
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