Sabre Sabre 30, Owner'S Manual

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3/21/2017 Sabre 30 Owners Manual
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keeps all fittings at the same electrical potential to minimize the effects of any
galvanic or electrical corrosion which may occur.
Any additional underwater hardware installed on the boat must be tied in to the bonding
system to maintain proper operation and protection from corrosion.
The integrity and operation of the system should be checked each year at launching and
hauling times.
Refer to the lightening protection and bonding system diagrams in the back of the Owners
Manual for the wiring details of your boat.
22:02 LIGHTENING PROTECTION SYSTEM: The lightening protection system provides a
"cone" of protection around the boat in the even of a lightening storm. Grounding wires
of #8 gauge copper connect all chain plates and the mast step to the keel.
The integrity of the lightening ground system should be checked regularly. Inspect all
wire and terminal connections at the mast step, all chainplates and the keep for tightness
and signs of corrosion.
Lightening strikes are unpredictable, so due caution during a storm is advised.
Allow no one in the water during an electrical storm. Remain inside the boat and avoid
making contact with any large metal objects such as the mast, shrouds, stanchions, bow
pulpit, stern rail or any of the items connects to the lightening grounding system,
especially in such a way as to bridge between any of these items.
If a boat is struck by lightening, there is likely to be damage to delicate electronic
instruments due to a high voltage­low ampere surge of electricity through the boat. If a
boat is struck by lightening, compasses and electrical gear must be checked for damage
and/or change in calibration.
Refer to the lightening protection and bonding system diagrams in the back of the Owners
Manual for the wiring details of your boat.
23:00 UNDERWATER CORROSION
Corrosion of underwater hardware is most often caused by galvanic action or induced by
stray electrical current. This condition is often referred to as "Electrolysis". To
minimize the risk of these types of corrosion, Sabre Yachts uses careful design, material
selection and inspection. In spite of our best efforts, you may find that your Sabre has
a corrosion problem. The following background material has been prepared to assist you in
stopping the corrosion.
23:01 GALVANIC CORROSION: Galvanic corrosion occurs when two dis­similar metals are in
physical contact with each other in sea water. The electrical potential between the two
metals causes a current to flow from one to the other. Each Sabre is equipped with
underwater hardware of similar metals in the galvanic series with additional corrosion
protection being provided by a heavy duty bonding system. Sacrificial zinc anodes should
be used as a means of protecting large pieces of underwater hardware, such as propellers
and shafts.
ELECTROLYSIS: Electrolysis results when a direct current from a battery or other external
source causes a metal in contact with seawater to become "anodic" and sacrifice material
to the solution. The reaction is basically the same as galvanic corrosion. However, much
higher voltages may be involved and the corrosion can be very rapid. Although sacrificial
zinc anodes may help minimize the effects of stray current corrosion, it can only be
corrected at its source. Stray current corrosion is most often traced to damaged or loose
wire connections, malfunctioning equipment or improperly wired equipment. The stray
current may also come from a source external to the boat.
23:02 CHECK LIST: The following check list and the wiring diagrams for your Sabre will
assist you in locating and minimizing some of the common causes of underwater corrosion.
1. Check the following wiring connections for clean, tights contact and integrity: