This is Jim again…with the 1987 C&C 35 MK III. I purchased it about 6 days ago in Owen Sound, Ontario. I have been sailing it constant since purchasing it and am now making my way to Sturgeon Bay, WI. So this model has 2 fresh water tanks. One on port and one on starboard. I think these or at least one of them were retro fits. Of course I have a water manifold to control which to tank use. Right now I have both tank valves open and I do not know if the water level equilizes.
So here is my question; I filled the starboard tank. Then I started filling the port tank. After a few seconds I head this thundering noise which was clearly the port tank either expanding or? i did not have the fill hose jammed in the fill hole to prevent venting. I stopped filling it immediately until I get the boat to home port in Manitowoc, WI. All of that was *6 days ago. However moments ago as my wife and I were cooking dinner and I had the poorly working pressure pump on I once again heard this thundering metal expansion like a steel drum sound from the right tank. We were doing dishes and running water while the pressure pump was on. At that point I shut it off. The water tanks are aluminum or stainless. If any sailor has a clue about this scary noise ..it would be very appreciated.
Jim n Kathy at dock in Manistique, MI
So here is my question; I filled the starboard tank. Then I started filling the port tank. After a few seconds I head this thundering noise which was clearly the port tank either expanding or? i did not have the fill hose jammed in the fill hole to prevent venting. I stopped filling it immediately until I get the boat to home port in Manitowoc, WI. All of that was *6 days ago. However moments ago as my wife and I were cooking dinner and I had the poorly working pressure pump on I once again heard this thundering metal expansion like a steel drum sound from the right tank. We were doing dishes and running water while the pressure pump was on. At that point I shut it off. The water tanks are aluminum or stainless. If any sailor has a clue about this scary noise ..it would be very appreciated.
Jim n Kathy at dock in Manistique, MI