Fiberglass and Hull
P - 1 HULL DESIGN INFORMATION
P - 3 EQUIPMENT INSTALLATION
boats are designed using the sound en-
Many boats are used for speciﬁc purposes or under
conditions which require the addition of special equip-
ment to the hull or deck. Special care must be taken
during the installation of any equi pment to a ﬁberglass
com ponent. A polysulﬁde or butyl based sealant
should be used to seal installations below the water
line. Silicone “marine” seal or similar bedding com-
pound should be used elsewhere.
gineering and mathematical principles of hydrostatics,
hydrodynamics, structure, and strength of materials.
The materials utilized provide optimum strength at the
lightest possible weight. The exact ﬁberglass laminate
schedule and construction techniques of each part
is determined in accordance with the strength and
P - 2 FIBERGLASS CONSTRUCTION
DO NOT install any item onto or through the
hull without adequately sealing the hull area
penetrated by the installed item or related
fasteners. Improper installations could cause
leakage or allow water absorption and thus
cause serious hull damage.
The ﬁberglass components of Four Winns boats
are of the ﬁnest quality materials, work manship and
construction techniques available. This ensures the
structural integrity to provide years of boating enjoy-
ment with minimal maintenance.
Always predrill fastening holes with a proper
size bit. Predrilling will help prevent the
ﬁberglass from splintering and thus causing
unsightly damage. Also, countersink holes to
prevent the gel coat from chipping.
The construction of a Four Winns hull begins with
the application of gel coat to the mold. The gel coat
is approximately 25 mils thick. A coat of resin and
chopped ﬁberglass is then sprayed into the hull and
carefully hand rolled until it is se curely afﬁxed to the
Any equipment which will be subjected to cyclic load-
ing or signiﬁcant force should be through-bolted to a
ﬁberglass compo nent. A butt block or backing plate
should be used to strengthen any area onto which an
item will be mounted.
A number of ﬁberglass layers and woven roving are
applied to the above laminate. Each layer is hand-laid
and hand-rolled. The keel and chine areas have
ﬁberglass woven roving overlapped in these areas
to provide additional strength. Some models utilize
encapsulated end-grain balsa core or coremat
laminates to achieve additional rigidity. Others utilize
additional laminations of woven roving to maintain
strength and rigidity.
P - 4 FIBERGLASS CARE & MAINTENANCE
Fiberglass is affected by weathering processes and
requires maintenance on a periodic basis to help
maintain the beauty and shine. The effects upon the
gel coat will be dependent upon boating conditions,
storage, type of use, and the care given to the boat
during the boating season.
The hull support stringers are located using special
tools, and are ﬁberglassed/bonded into place. This
ensures a strong, rigid hull, permanently formed into
a solid assembly, free of distortions.
Four Winns utilizes fade-ﬁghting gel coat in the exte-
Fiberglass cockpit liners and seat base are construct-
ed similar to the hull. Balsa core or coremat lamin-
ations are utilized when necessary.
rior ﬁnish. It is specially formulat ed to resist fading and
yellowing, and retain more of its original gloss than
lesser grade gel coats. However, it is still important to
maintain the gel coat to protect the ﬁnish.
In addition to a thorough visual inspection of each
ﬁberglass component, samples are mea sured us-
ing special equipment, for ﬁberglass reinforce ment
to resin ratio, laminate conﬁgura tion, weight and
thickness. By these procedures Four Winns ensures
A. General Maintenance
For freshwater use, the boat should be washed
once or twice a month. When using in a salt water
environment, considerably more care will be neces-
sary. Be careful when selecting a cleaning agent.
Hand dishwashing detergents are usually gentle
and are recommended for cleaning gel coat. Cleaning
Fiberglass and Hull - Section P
Owner’s Manual Page 105
|Categories||Four Winns F-Series Manuals, Four Winns Manuals|
|Tags||Four Winns F|
|Document Type||Owner's Manual|
|Product Brand||Boats and Cruisers, Four Winns. For support contact your dealer at http://www.fourwinns.com/locate-dealer.aspx|
|Document File Type|
|Wikipedia's Page||Outboard Marine Corporation|
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