Evinrude 4906B 4HP 1969, Owner'S Manual

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10-3 FIBERGLASS HULLS
Fiberglass reinforced plastic hulls are
tough, durable, and highly resistant to im-
pact. However, like any other material they
can be damaged. One of the advantages of
this type of construction is the relative ease
with which it may be repaired. Because of
its break characteristics, and the simple
techniques used in restoration, these hulls
have gained popular ity throughout the
world. From the most congested urban
marina, to isolated lakes in wilderness
areas, to the severe cold of far off northern
seas, and in sunny tropic remote rivers of
primitive islands or continents, fiberglass
boats can be found performing their daily
task with a minimum of maintenance.
A fiberglass hull has almost no internal
stresses. Therefore, when the hull is broken
or stove-in, it retains its true form. It will
not dent to take an out-of-shape set. When
A
new
fiberglass boat and trailer outfit ready for
an
owner
and
a power
package.
FIBERGLASS AND ALUMINUM HULLS 10-3
An aluminum boat ready for an engine. The
owner
of
this type boat will probably carry it atop his vehicle
and
be
saved the expense and trouble
of
tro.ilering
to
the water.
the hull sustains a severe blow, the impact
will be either absorbed by deflection of the
laminated panel or the blow will result in a
definite, localized break. In addition to hull
damage, bulkheads, stringers, and other stif-
fening structures attached to the hull, may
also be affected and therefore, should be
checked. Repairs are usually confined to
the general area of the rupture.
10-4 ALUMINUM HULLS
Aluminum boats have become popular in
recent years because they are so lightweight
and may be carried with ease atop an auto-
mobile or other vehicle. These aluminum
craft are available in sizes ranging from
small 8-foot prams to twin-hulled pontoon
houseboats or swimming "rafts" in excess of
30 feet. Naturally, the large units cannot
be carried atop a vehicle.
A boat and outboard used in salt water. Notice the
marine growth
on
the
lower
unit and the anti-fouling
bottom paint
on
the hull which prevented the marine
growth.
I.UVn.
Simple drawing
to
illustrate two types of possible
damage
to
the hull. Such injury
to
the boat will affect
the boat's performance and subtract from the owner's
enjoyment.