Sea Dog

Else a full bore isolating valve such as those from Toolstation for about 3 quid, since they're set by screwdriver and less likely to be knocked out of adjustment.

Being invited to vote at the 11th hour to select 50% of the standing candidates when most appear to represent a narrow agenda or are unknown to the electorate, isn't going to encourage mass interest and a high turn out either. So there's another factor which could easily be interpreted as apathy to be used as such against boaters' interests in the future. If there's going to be elections, they need to be done better than this. However well meaning, I suspect it's simply too early for such a move.

Good point!

Well, again, I see your point but it isn't strictly nonsense, just unusual, confusing and and out of place in this discussion - we aren't talking rates of increase. Nevertheless, Coulombs per second per day would be an acceleration - a rate of increase - in current drawn. Substituting Amps for coulombs per second, you could quite conceivably have something which increased its current draw by x Amps per day. I'm also pretty sure I could eat 2 donuts and a halibut, and if I continued to do so that would be a valid measurement too!

Well yes, indeed it would Alan, which may be unacceptable but I was interpreting earlier posts rather than advocating that course of action. It does seems a little odd that, on the one hand, a new extinguisher can be OK unchecked for 5 years, but then needs annual servicing at half its replacement cost, whilst on the other hand, if it's old enough not to have a date on it, it doesn't go out of date.

Well, it wasn't so grave

Well I want a special department then, because I've fallen in, but I've also pulled my wife out. Oh, and she can be in it with me, cos she pulled me out when I fell in!

Or Taylors of Harrogate?

Actually, it's acceleration.... but your point is a good one! (Now that may well be one more for the engineers, and possibly others who understand calculus)

Ah, thanks DC. So the cheapest route is, after the first 5 years if that's the expiry period, to service at half the cost of replacement just before each BSS inspection. Otherwise, if you find it unacceptable to have 'out of date' extinguishers, replace every 5 years with new ones showing a 5 year life. Regular annual servicing quickly becomes more expensive than 5 year replacements. Does that sum it up correctly?

Well, sort of - what's actually happened then is that the hot water tank is hot, the heater has done it's job and should be turned off. It's best practice to also have the bathroom rad 'on' to provide sufficient load to avoid short cycling through the calorifier alone.

How does the price of extinguisher services, either annual or even just before aeach BSS inspection, stack up against replacement every 5 years?

Aw, bless!

Not if they're in series DC. In series, the output of one unit connects to the input of the next. Any valve closed stops flow beyond it.

For one reason... because you may wish to turn off some of the rads in warmer weather, but may still run the heater to give hot water. If you use a series circuit and close a valve, all flow in the system will stop. The balancing valve is there for a couple of reasons: to ensure that there is sufficient flow to the radiators, as an unthrottled calorifier circuit may steal too much of the flow; to restrict flow through the circuit in the fully heated hot water tank, which would otherwise force the heater to shut down or short cycle before the radiators are hot. This is because the return water temperature is what the heater unit senses to either drop to low power (if a feature) or stop heating. The valve should be adjusted to give a small temperature difference between the in and out connections to the calorifier.

Pleased you made it Cap'n, we don't want you in amongst the weeds before you're properly hooked! I like your boat btw, lovely lines.

It's worth keeping the out of date ones to use for false alarms.

Nah, there's always someone clueless buying a boat for the first time and thinking it'll never happen to them. As long as the membership is free, there'll be a queue! Conversely, there'll always be vacancies arising from those who lose their qualifications!

I don't know about that, but I regularly pass shells and sailaways that have no hope of being sold as 'boats' within 5 years! How does the law apply to selling on 'part-finished projects'?

Have you talked about it? Surely he'd only be being inconsiderate if he knew he was bothering you and refused to help. Maybe he doesn't know it's loud outside? Maybe it bothers him too but he doesnt realise that his heater has no silencer and it could have? One easy solution may be for him to turn his boat so that his exhaust points in the other direction if that was less likely to bother someone. Another, without involving him, would be for you to turn your boat so that his exhaust and your bedroom were not aligned. Remember that the subject of this thread was someone trying to be considerate by asking about the effect of his Eber on others around him. Most folks have either bought a boat with these things fitted (well or badly) or have asked the builder for a heating system. Few will have asked for a jet engine specifically to pi$$ off their neighbours! Edit - sp

I use Silky RX, an enzyme product added at a teaspoon of granules a month. Cleared up an ancient solids issue which was causing my tank contents gauge to lie like a hairy egg with unpleasant results. At less than a tenner for a year's supply, in my case it more than paid for itself by enabling less frequent pump outs, but also there's no odour.

I have a 175 Amp domestic alternator Graham, so there's plenty of capacity to let the batteries accept whatever they will whilst cruising. There's normally just the fridge cutting in and out which makes no difference at any time, but I have an 1800 watt coffee machine that barely bothers the charging current at cruising revs providing I haven't just started charging.