Monterey Boats 350 Sport Yacht, Owner'S Manual

Page: 107 / 196

107
350 SPORT YACHT
Chapter 13:
ROUTINE MAINTENANCE
13.1 Exterior Hull and Deck
Hull Cleaning-Below The Water Line
When the boat is removed from the water, clean
the outer bottom surface immediately. Algae,
grass, dirt and other marine growth is easier to
remove while the hull is still wet. Use a pressure
cleaner or a hard bristle brush to clean the sur-
face.
Bottom Painting
Your Monterey hull is manufactured using state-
of-the-art materials and processes. A layer of
super tough, Ashland “AME” Resin with high den-
sity and superior adhesion properties provides an
exceptionally effective barrier to osmotic blister-
ing.
Osmosis is caused by a chemical reaction between
water and substances in the hull laminate below
the waterline. If water breaches the exterior
gelcoat and barrier layer, it can react with the
chemical components in the laminate creating
acidic substances. These substances create pres-
sure behind the gelcoat which causes blisters.
An epoxy barrier coating such as the Interlux
Interprotect® system properly applied to the hull
before bottom paint will help prevent this prob-
lem. A barrier coating also provides an excellent
base coat for the bottom paint.
Even though the hull on your Monterey is built
with a layer of Ashland “AME” blister resistant
resin, we recommend that additional protection
from marine growth and pollution be provided by
a barrier coating system and antifouling paint if
the boat is to be left in the water for over 30
days. This is extremely important as pollution
and marine growth can cause osmosis and dam-
age fiberglass hulls.
SANDBLASTING THE HULL BOTTOM WILL
DAMAGE THE FIBERGLASS. USE A FIBERGLASS
WAX REMOVER AND SAND TO SCUFF THE
GELCOAT SURFACE. THE INSTRUCTIONS AND
RECOMMENDATIONS OF THE BARRIER COATING
AND ANTIFOULING PAINT MANUFACTURERS
SHOULD BE FOLLOWED EXACTLY.
BARRIER COATINGS AND BOTTOM PAINT
SHOULD BE APPLIED ONLY BY QUALIFIED
MARINE PROFESSIONALS IN A BOAT YARD OR
DEALERSHIP THAT SPECIALIZES IN THEIR
APPLICATION. USE ONLY STANDARD, HIGH
QUALITY ANTIFOULING PAINTS AND BARRIER
COATINGS FROM NAME BRAND
MANUFACTURES SUCH AS INTERLUX AND
PETTIT.
DO NOT ALLOW THE HULL ANTIFOULING PAINT
TO CONTACT THE OUTDRIVE. MOST
ANTIFOULING PAINTS DESIGNED FOR HULL
BOTTOMS CONTAIN COPPER AND CAN CAUSE
SEVERE GALVANIC CORROSION DAMAGE TO
THE OUTDRIVE UNIT. USE ONLY ANTIFOULING
PAINT DESIGNED FOR OUTDRIVES AND
OUTBOARD MOTORS. ALWAYS LEAVE A ONE
INCH BARRIER BETWEEN THE HULL BOTTOM
PAINT AND OUTDRIVE.
Most bottom paints require some maintenance.
Proper maintenance is especially important when
the boat is in saltwater and not used for extended
periods or after dry storage. If the hull bottom
has been painted with antifouling paint, contact
your dealer for the recommended maintenance
procedures.
Sacrificial Anodes
Sacrificial zinc anodes are installed on the inboard
engines’ freshwater cooling system, outdrives and
on the transom. The transom zinc is connected
to the bonding system and protects the trim tab
hinges, metal thru-hull fittings and other under-
water hardware that is bonded. Additional zinc
anodes should be installed on the trim tab planes
if the boat is to be left in the water.
The anodes are less noble than copper based al-
loys, aluminum and stainless steel. They will de-
teriorate first, protecting the more noble engine
and underwater hardware against galvanic corro-
sion. Anodes should be checked monthly and
changed when they are 75% of their original size.
When replacing the anodes, make sure the con-
tact surfaces are clean, shiny metal and free of
paint and corrosion. Never paint over the anode.
The bonding system should be inspected by a quali-
fied marine electrician once a year to make sure
all connections are sound and there is continuity
throughout the system.