Barry's Blog #127 - Wrangle with a mangle

Admittedly the scariest moment of this journey so far was way back in August 2018 at 10.30pm on a moonless Friday night.

That was the night we were tied to a municipal mooring ball just outside the harbour wall at Javea on the east coast of Spain. The mooring failed and A B Sea ended up being dashed upon the concrete blocks of the outer harbour wall.

I won't rehash that story in this blog, but if you want to read it, here's a link.

So what else is scary?

Two words; Boat jobs.

I am literally flying by the seat of my pants with every boat job we tackle and I'm taking apart our 100,000 Euro (AU$171,000) home with nothing more than information gleaned from watching a few YouTube videos and reading advice from people who may or may not know what they're talking about.

I've done enough boat jobs now to be wary enough that I know it's not going to be as easy and straightforward as I imagine, but they've still got to be tackled.

I lay awake some nights with my stomach in knots from stressing over what job needs to be done next and mentally running through the sequence of events to complete the task.

Job completion, that's another issue. I take things apart and then discover some other issue and that means sometimes months can pass before I can put back together the first job I started. Will I remember how everything goes back together? It's stressful.

A job actually completed

Every boat owner has their own personal level of maintenance. Some pay excruciating attention to detail and get stuff repaired or replaced straight away. Others just follow their annual check list and keep the gremlins at bay. And then there are those with a 'near enough is good enough' attitude.

Boat owners in the third group are the ones most likely to be allowing their boat to eat your boat. I'm talking about galvanic corrosion. I've mentioned it in a couple of previous blogs mostly when explaining about sacrificial anodes, which are there to protect the metal parts of your boat from corrosion.

Because boats in a marina are all connected together by the green shore power ground wire, when plugged into 220v shore power, they become a giant battery. The shore power ground wire should be connected to the individual boat's DC grounds, engine block and bonded underwater metals.

But if Joe Blow (or several Joe Blows) have a fault that they're unaware of then the stray currents in salt water form an electrolyte and the dissimilar metals connected together act as a battery, causing corrosion to your underwater metals; through hulls, propeller, prop shaft, bow thruster and even your engine.

Hang on a minute Baz, didn't you say that the sacrificial anodes protected all those metals?