Detling

If fitting / using kingspan you have to really seal the inside to prevent air circulating behind it from the bilge etc as that will lead to condensation on the side of the steel. Spray foam leaves no gap there, and narrow boats do rust from inside as well as outside.

In the GU10 ones the transformer is in the Bulb so when you replace the bulb you replace the transformer. All LEDs run on low voltage DC at the LED element.

When charging if you disconnect the lithiums when the charge voltage reaches a set point around 14 volts, depends on how hard you want to charge the lithiums, the still connected lead acid will then continue to charge as they do now until the volts reach 14.X and the tail current is below 1%. When you stop the charging, as the surface charge on the Lead is dissipated and their voltage falls below 13.6 volts you can reconnect the lithium to take over the running of things off the batteries. Provided you have a BMS that can be programmed to turn off at 14V and turn on at 13.6 it is all done for you.

All the attention to aerials and gain etc are missing the factor of location. In Plymouth with a 3 mobile MIFI the performance varies dependant on the time of day and the day of the week. At 8 am on a sunday morning it is very good, but at 3pm on a Saturday in term time (loads of students locally) it can be appalling frequently dropping offline (more likely dropped by the server) and struggling to log on because the local system is way overloaded. As 5G signaal is 'line of sight' much more than 4G, location is going to be even more critical in built up areas where you are 'squinting' between building to see the mast. At present 5G coverage is almost non existant outside big cities.

Another vote for captain tolly creeping crack cure.you just run the nozzle round the edge between steel and frame and it creeps in under capillary action then sets. It is like PVA glue but works well on tiny seeping cracks which it sounds as though you have. I have used it on a wooden boat and on my weeping window on my narrowboat. On both occasions the leak stopped for months.

In the winter most checkers seem to patrol marinas and mooring areas with tarmac. Easy pickings. In summer they do indeed spread theirs wings or dust down the bike and travel much further, but generally into areas where there are several boats. So moor on a muddy towpath in the middle of nowhere with nobody moored within half a mile and if you get checked more than twice in a year you have been unlucky

He should be glad they didn't use tractor to move his car, a big push on the side moves them the new doors are a bit pricy and the insurance company may refuse to pay. It wouldn't be the first and probably not the last.

Today my 600 watt of solar produced 20 amp hours admittedly into full batteries so probably supplying pumps and lights. When testing them yesterday the were producing 30 watts at about 1pm into a short circuit(ammeter) Welcome to dull winter days.

One marina a few years back defined high usage as over 100 nights on board in the marina don't know how they counted but it seems reasonable. If out cruising it obviously didn't count. High use added about 10% to the bill.

Unlikely, but some fridges refuse to run if the ambient is to low, often about 10 degrees which is why they are a problem in a garage, because they often refuse to run to cool the inside, as it is to cold outside according to them, but 5 or 6 degrees above where the beer should be keot

the water below about 6 inches is almost always above freezing and doesn't really go below 4 degrees, due to the laws of physics. In a hot summer the top few inches can reach into the 20's but more normally the upper teens. The air temperature inside the boat/engine hole on a cruiser stern can go low enough for the diesel in the filter to wax (about -10) as I found out a few years ago. Insulation does not warm things up, it merely slows the rate of temperature change both up and down. For your batteries look at putting them on or wrapping them in carbon heat mats, sold to keep food warm, and seedling germination loads available a lot are 12 volt. Just turn on before you want to charge the batteries. Insulation outside to keep the heat in.

Most tunnels have a horse route over the top, better than aquaducts which rarely have a foot path for those who have vertigo. My friends wife walks over tunnels so far crick is the only one without a direct path but an extra 1/2 mile no problem. But got the Llangollen she needed two taxis for the aquaducts.

Whilton will probably carry on as normal

Remember that up until 2017 there were many part built boats, from shell to almost complete, sold with the hull RCD only, and no certification of the self build fit out, also there are many boats modernised upgraded with no certification, so it is probable the RCD on over 50% of boats is dodgy / out of date. Lack of a full trail doesn't make it a bad boat. as theroretically even replacing the batteries with a different brand / size can invalidate the RCD and fitting solar definately will, so you must get a survey to see if the boat is in good order and well maintained. An RCD alone is not enough on an old boat, which may have sat on the bank somewhere for 5 years with no proper paint on it and now someone has slapped a coat on over the rust. Caveat Emptor remeber and there are brokers and brokers, just like there are used car salesman of all types.