Hunter 37.5 switch to propane

Feb 16, 2024
43
Hunter Legend 37 Gig Harbor
`I have a Legend 37, not 37.5. I see three possible solutions...
1. External - hang it on the pushpit.
2. My boat has two lazarettes in the aft corners of the cockpit. Perhaps you can use one of those for propane. There are short fat tanks. Perhaps the lazarette IS the propane locker. (EDIT: See what Tally Ho says. Be sure any containment vents from the bottom to the outside!)
3. Use an induction cooktop. Modify your battery / inverter to sustain it.
 
Last edited:
Jan 7, 2011
5,694
Oday 322 East Chicago, IN
If the boat does not have a proper propane locker, hanging one externally is probably the easiest option.

But, does the boat have a stove/oven? If so, it must have had a propane locker. The locker MUST have a drain hose that drains outside of the boat. Propane is heavier than air, so the drain must be in the bottom of the locker and the drain hose needs to run down and out of the boat.

Be careful about the use of a large lazarette as a propane locker…they generally “drain” into the bilge…and this exactly what you do not want. If you mean a small locker is a lazarette, verify it has a drain that drains outside of the boat.

You also need a solenoid that only opens the Propane valve when the switch is on…and the right hose to the appliance.

What does the boat have?

Greg
 
Feb 16, 2024
43
Hunter Legend 37 Gig Harbor
If the boat does not have a proper propane locker, hanging one externally is probably the easiest option.

But, does the boat have a stove/oven? If so, it must have had a propane locker. The locker MUST have a drain hose that drains outside of the boat. Propane is heavier than air, so the drain must be in the bottom of the locker and the drain hose needs to run down and out of the boat.

Be careful about the use of a large lazarette as a propane locker…they generally “drain” into the bilge…and this exactly what you do not want. If you mean a small locker is a lazarette, verify it has a drain that drains outside of the boat.

You also need a solenoid that only opens the Propane valve when the switch is on…and the right hose to the appliance.

What does the boat have?

Greg
Tally Ho, My 1989 37 (predecessor to the 37.5) has a CNG range and oven. I'm using the oven as a skillet storage and a induction 'burner' to substitute for the range top. Boat has a microwave too. The CNG system is completely inside the main salon and in a corner behind the seats making it hard to add a propane locker. On top of that, CNG sources are hard to find where I am in Wa - except one near by. People drive from Portalnd, Or to Fife Wa to get it.
 
Jan 7, 2011
5,694
Oday 322 East Chicago, IN
Ah, got it. Didn't think about CNG. Makes sense, but still hard to believe Hunter didn’t consider a propane locker.

But if not, then an external tank may be the only option.

On my O’Day 322, a PO wanted to use larger tanks, so they modified the propane locker by extending the depth quite a bit. I don’t like it because the dang thing is so deep. But my point is that if you have small lockers in the cockpit, you might be able to create a propane locker by drilling a hole in the bottom, glassing in a drain barb, running a drain line to a new above the waterline thruhull. A chore for sure, but if you have a locker without a drain, it could be done.

But you can’t use a large lazarette for this. Unless you put a small tank locker in the lazzarette and did the drain line like above. There are some commercially available propane lockers available for this application or an “on the rail’ mount.


Greg
 
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