3 claims in “maritime”
Methanol fuel cells emit heat and distilled water as byproducts; the water can be used to top off flooded lead-acid batteries, and the heat must be ventilated to prevent overheating in the installation compartment.
Large boats (40+ feet) from major manufacturers (Fleming, Grand Banks, Crays) routinely include isolation transformers as standard equipment; this demonstrates industry recognition that isolation is essential for valuable vessels.
John Fredriksen is the wealthiest shipowner in the world, formerly with the largest property in London until recently, and during the Tanker War of the 1980s made significant profit while losing nine crew members.