Robertson and caine Leopard 38, Owner'S Manual

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OWNER’S MANUAL
L38 OM 110v Rev0 (11/02/03) Page 58
H. RIGGING
1. Rigging is subject to Fatigue and wear and must be carefully inspected
and maintained. A regular inspection for Wear, discoloration, loose wires
and chafing should be conducted. The frequency should be determined by
the usage of the vessel.
2. Always rinse the rigging with fresh water after sailing. Salt deposits can
create corrosion pitting, cracking & general deterioration.
3. Clean rigging with CHLORINE free water soluble detergent and non
abrasive cleaning equipment.
4. Inspect rigging for stains; Rust stains can indicate areas of stress
corrosion or cracking. Remove stains with Synthetic or brass pads, never
use steel wool.
5. Inspect for broken wires and replace as necessary.
6. Do not mix Stainless steel and Galvanised metals on cables, fittings, AND
PINS etc. Mixing dissimilar metals will cause rapid deterioration due to the
effects of electrolysis.
7. If rigging is removed for any reason it must be stored in a dry place never
in plastic bags or plastic wrapping.
I.
ELECTROLYSIS AND GALVANIC PROTECTION
1. Salt water allows electric current to flow from anodic to cathodic materials.
The relative position of two metals on the Galvanic table determines which
material (the Anode) will lose material and which will remain largely
unchanged (the Cathode).
2. The rate of wear is determined by the distance the two metals are apart on
the galvanic table. For this reason sacrificial Zinc anodes are fitted to the
propeller shaft of each engine to attract any stray electrical current away
from the Bronze propellers and Stainless Steel propeller shafts.
3. The rate of electrolysis and therefore the speed at which the sacrificial
anodes deteriorate varies greatly and is affected by amongst other things
the quality of the water, the amount of galvanic protection on boats
berthed in the immediate vicinity of the vessel.
4. Any work being done i.e. welding on surrounding boats will greatly
increase the risk of electrolysis.
5. The risk of galvanic corrosion is greatly increased if any surrounding boats
are connected to shore power and they have any neutral or ground faults
in their electrical wiring systems.
6. Your vessel is protected to the highest standards and as long as the
sacrificial anodes are inspected regularly (minimum every 3 months) and
replaced as required no problems should be experienced.