We never expected to have a trouble-free boating life, but
we (naively) thought that we would have some respite from maintenance work
after all the refurbishment work we did.
However, that has proved not to be the case. I have been saying that I would blog about
the maintenance and repairs we have been compelled to carry out since rounding
Land’s End and so this blog entry will aim to do just that. The following aspects are not listed in chronological
order and cover some aspects of repair and others where we have decided to
monitor for the time being until an opportunity presents itself for full
repair.
The first issue I want to talk about is the stern tube assembly. The stern tube is a tube through which the prop shaft spins, connecting the engine to the propeller (I know, Granny and Eggs spring to mind, but bear with me!) Since this tube is underwater it clearly has to be sealed at either end to prevent the ingress of seawater whilst also allowing the prop shaft to spin freely. There are various different styles of sealing methods used but all essentially rely on a packing material (in our case, rope) clamped around the shaft by a gland nut.
The packing material is lubricated with grease which you pump into it via a brass pump. Some gland nuts are designed to allow a small (drip) amount of water through to help keep the packing cool when the shaft is spinning. By all accounts, as ours is a greased type, we shouldn’t have water coming through. When we arrived in Milford I noticed that the bilge area around the stern gland had about a litre or so of seawater in it. Up to this point this area had been dry. I mopped out the water and thought that the gland nut needed adjusting. I then pumped in more grease only to notice that the grease was oozing out from behind the gland nut assembly.
This is not good news! The stern tube should be screwed into the back of the assembly and therefore there are only two ways this grease could escape. Either the tube is not screwed in (far enough or at all) or the tube itself has corroded through and become holed. The only way to know for sure is to remove the prop shaft and the stern tube, but this can only be done with the boat out of the water. Once again we find ourselves wondering why this issue hadn’t manifested itself before we had the boat lifted out at Gweek. I have cleaned up the area, adjusted the gland nut and continue to monitor the situation, but this is only delaying the inevitable. Thankfully there has been very little water coming in, and it only appears if we have had to push the engine hard, so I am hoping it will hold out until at least next spring. We are facing another hefty bill to rectify this one, particularly if the stern tube needs to be replaced. Oh the joys of wooden boat ownership!
I decided that it would be better if the fairlead was fastened directly to the deck rather than sitting on top of the toe rail. This meant cutting the toe rail back from the stem head to leave a gap for the mooring lines to pass through. This works much better, and doesn’t look too bad.
I just wish I had thought of that idea before doing the toe rail scarph as I could have kept the original toe rail and just cut out the damage. Oh well, you live and learn!
Everyone says that owning a wooden boat means dealing with leaks, and that certainly seems to be true. We also expect to have water collecting in the bilge which can be mopped or pumped out. However, one particular leak is worth talking about. We were regularly getting a fair amount of water collecting in the galley bilge and under the galley floor boards. We had been advised to taste the water to see if it was salty, the theory being that you could eliminate fresh/rain water leaks rather than seawater leaks. Sure enough, the water tasted salty and so we guessed that it was probably an underwater seam that was leaking when the boat was being bounced around. When we had the boat out of the water at Gweek we thoroughly examined all of the underwater seams and found nothing amiss. Perhaps it was one of the, now replaced, keel bolts that was the source of the leak. However, we were still getting water collecting in this area. There was no obvious sign of entry. Sometimes there would be a lot of water and others there would be only a small amount, but it was frustrating me. Then I realised that the presence of a large amount of water coincided with filling the water tanks. Why hadn’t I noticed this before? I lifted the saloon floorboards and watched as I filled the tanks. Sure enough, there was a leak from the tank lid and one of the pipe connection flanges. I ordered new seals and now we have a dry bilge. I ask, why hadn’t I thought of this before. I’ll tell you why. I was misled by the notion that salty water could only be a seawater leak. When you put fresh water into the bilge of a 55 year old wooden boat it soon becomes salty due to a build-up of years on the water. The rule of thumb may be true in many cases, but it’s not always the case, and shouldn’t be used to misguide you from other potential causes. Lesson learnt? Possibly!
The last topic I’ll cover in this entry is the
electrics. This is a combination of
repairs and an ongoing plan to make ourselves more self-sufficient. As you know we like to spend nights at anchor
away from marinas whenever we can. There
are two things most skippers worry about constantly. One is fresh water (of which we know we can
last about six days) and the other is electrical power. I constantly live in fear that the engine
will fail to start when needed due to a flat battery. We have a total of six lead-acid batteries
arranged into three separate banks. One
bank is for the electric windlass (the anchor winch), one bank is for the
engine starter and the other one is for the domestic electrical loads. Even though they are separated in theory by
an automatic battery isolator I was increasingly getting the feeling that the
engine start batteries were being drained by the domestic loads. I know that, again in theory, I can charge
the batteries from the 240v battery charger as long as I can start the engine. But if the start batteries are flat I won’t
be able to get the engine going. I was
also beginning to think that the engine alternator wasn’t functioning properly
either. What to do? Firstly I replaced the engine batteries as one
of them was definitely not holding its charge.
I have also replaced the alternator and wired this directly to the
engine batteries so that it only charges them and not the domestic
batteries. This now gives me the
confidence that my engine batteries are completely separate and unable to be
discharged by the domestic loads. I have
realised that the automatic battery isolator needs to be replaced as this isn’t
working correctly, so that’s next on the cards.
I can still charge the domestic batteries by running the engine which
can power the 240v battery charger via a separate generator. All of this is a good step forwards, but we’re
far from self-sufficient. We have a 100w
solar panel on the wheelhouse roof which is giving some charge but not
enough. The biggest electrical draw we
have whilst at anchor is the fridge, and this one panel is nowhere near capable
of delivering the charge to the batteries to keep up. We need to increase our solar charging
capacity as much as possible. Space is
at a premium so I have yet to work out how best to solve this one – the research
is ongoing as is the cost!
Ok, so a bit of a long-winded summary of a year or so of repairs. There are other things, like continual leaks, things breaking, instruments not working properly, etc., but nothing unexpected. Keeping up with the big stuff is bad enough. Till next time……!