It is fair to say this looks complicated but it needs to be. It is the forward tank, mirroring another separate system aft, and supplies the wash basin and shower from a diesel water heater or immersion heater from a gas generator. It proved necessary to insert a small electric pump to circulate water in the heating circuit as thermal convection did not succeed alone.

With winter drawing on, yesterday involved clearing airlocks with the help of Pete Lewis who fitted the pumps to Jim Dines’ design and today was the first successful operation without qualified intervention – and it worked!

More photos here.