The problem on a boat is that it is hard to avoid having different metals together in some places - stanchion posts are usually steel, their bases may be steel or aluminium and the toe rail those are attached to is often aluminium. And the circumstances are always going to be right as sea water is salty so conducts electricity quite well. The result can be unattractive bubbles of corrosion or it can have more serious consequences such as where a steel fitting like a radar bracket is attached to an aluminium mast. The new pulpit required two replacement stanchion bases and these have been manufactured locally from stainless steel rather than the original aluminium for speed, time and cost reasons. This has moved the risk of galvanic corrosion (the correct term for the process) from between base and post to base and toerail. However corrosion can easily be prevented by using a suitable barrier, in this case a thin plastic pad between the two metal parts.
|Corroded windless base|
|Will he get out of there?|
|Windless, plate and messy shelf|
|The steel plate just needed a clean up|
A day or so later Kevin threaded himself feet first into the well, the only way to undo the bolts that hold the anchor windless and its steel plate in place. Both I and passers by wondered if he'd get out again but he did. Then the forepeak had to be partially emptied of sails so that the windless could be disconnected from its power supply as the cables aren't long enough to otherwise lift it onto the deck from its shelf at the rear of the anchor well. Meanwhile the rough weather lashing the coast resulted in the water supply to the pontoon being cut due to wave damage so fresh water to wash everything down with was in short supply. Having scrubbed away the dirt with bucketfuls of sea water the final rinse was water from the galley tap. The weather was decidedly flaky - apart from strong southerly winds which have been tossing water over the marina wall for the last couple of days, intermittent rain showers coated red Sahara dust on everything. And, when it wasn't raining, you were breathing in that same thick dust leading to coughing and sneezing fits or a perpetual runny nose, working outside had become particularly unpleasant.
Ferreteria Tias (or FT) is a veritable Aladdins Cave of DIY materials and kitchen equipment that we have both become addicted to. Kevin re-purposed a 20x20cm piece of the lurid plastic to become a sandwich filling between the winch and its steel mounting plate. It is easily cut with scissors or a knife and can be drawn on with a biro or pencil.
|Plastic cut and ready to go|