I’m pulling Celtic Cross up on the hard this winter here in Michigan (42 degrees 32 minutes north) and I’d like to know what others have done with their seawater system in freezing climates. I talked with EchoTec on my watermaker and they recommended pickling with some food-grade glycol to preserve the membranes. The freshwater system gets drained so I can clean the holding tank. However, the seawater system is complex. I’ve got heat exchangers on the main engine, generator, and three heat pumps. Plus the two heads. Anyone have recommendations?
S/V Celtic Cross