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8.11 Galvanic corrosion
As the boat can be operated in salt, polluted, and
brackish waters the hull is equipped with zinc anodes
to prevent damage to metal parts coming in contact
with the water. The anode is slowly eroded away by
electrolytic action and requires periodic inspection for
deterioration. If the zinc shows extreme erosion, it
must immediately be replaced or it will cause damage
to other metal parts. The stern drives are also
protected by zinc anodes and must also be inspected
regularly for deterioration.
The
Volvo
stern drives are also equipped with an active
galvanic corrosion system which should be energized
at all times while the boat is in the water. For
maintenance refer to the engine manufacturer manual.
8.12 Winter storage
Storage or winter lay-up requires special preparation to
prevent damage to the boat. Without proper
preparation, storage may cause rust or corrosion to
metal parts, mildew damage to carpentry and
upholstery, or freeze damage due to water inside
components or pipes.
While the boat is out of the water make sure the
batteries are fully charged and the active galvanic
corrosion is switched off by taking out the fuses. Also
bilge pump number two (2) should be manually
switched off by taking out its fuse, located in the bilge
pump switchbox in the engine compartment.
If you want to connect the boat to shore power while on shore there should be a
jumper placed in the earth wiring of the earth separation transformer.
Refer to the manual of the transformer to do this properly
8.13 Inspection
Visually inspect all hardware, clamps and fittings for tightness; all hoses, tanks,
through-hulls and caulk for leakage; and all wiring for corrosion, fraying or other
damage before launching the boat. Inspections must be performed at the start of the
season and periodically during season.
CAUTION
Never paint or coat zinc
anodes or cathodes with any
substance. Once covered, they
do not provide protection from
galvanic corrosion. Replace
anodes if they have
deteriorated 50% or more.
Repairs, removals and
replacements
Do not attempt to make
repairs unless you are certified
to do so, have necessary
authorized repair information,
and use approved marine
replacement parts.
DANGER
While using shore power while
the boat is not in the water,
the boat will not be properly
grounded to the electrical
system on shore. Never apply
shore power on shore without
making the proper connection
to the shores network earth.
