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But what happens in an emergency? In the event the furnace fails, the Bristol Pacific model diesel stove in the galley can provide 6,500-16,250 BTU to heat the forward accommodation. At the lower heat setting it could maintain a temperature differential of 21 C, while the higher one maintains Sharina’s the design differential requirement of 55 C in the forward compartment.
At the lower setting, water pipes, etc., are protected down to -20 C, a not infrequent winter temperature, which is why the design requirement is the higher 55 C differential. Because the galley stove alone cannot heat the whole boat in the event of a furnace failure, additional heat has to be supplied by the diesel fireplace in the salon. A fireplace such as the Bubble produces only 3.5 kW (11,946 BTU), good for a 17 C differential overall. So it will only heat the pilothouse and salon, not the aft cabin.
