What many people do is have their built-in heating systems switch on automatically when the temperature falls below, say, 5 degrees Celsius. The systems are diesel-fuelled, and it's not an expensive solution. We don't have such a system. Our only option would be to have a thermostatic device plugged into a mains socket, and a bar heater or similar plugged into that.
However, I read what seems to be a really good idea in an online forum this morning. A dehumidifier. This can be set to reduce the humidity in the boat by set amounts (which is far smaller than the house which these devices are said to be able to deal with), and go to standby when the set level is achieved. It checks 30 minutes later to see if it's needed again. If it is, it reactivates, if not, it goes back to sleep. Obviously, we don't have the windows open when this is working.
The given energy consumption makes it far cheaper to run, and would pay for itself within a year; there are many times it could be used, even when we're on board - wash-day is the prime one.
The device we've just ordered is able to send its collected water through a hose into the sink - surprisingly, most of them don't have that feature - so we don't have to empty a tank two or three times a day! It's been highly commended by other boaters, and by Sailing Magazine, who voted it "Best Buy".
We'll be able to test it before we leave it alone to get on with the job. Fingers crossed!
After using the kettlebell Grace bought the other week, she decided that it's fine for some exercises, but too heavy - at least at the moment - for others, so we returned to the warehouse shop yesterday to but two more, one at 4kg and one at 6. If Grace doesn't get stronger and fitter now, there's something very wrong!