RE: LPG Leak
The gas sniffer needs to be low in the boat , propane is heaVIER THAN AIR.
oVER THE STOVE IS LESS THAN USELESS TO FIND PROPANE , BUT ok FOR A FIRE.
When we outfit with propane we use a Coasty approved "home run" marked hose from the tank solenoid to the (usually) range.
The propane hose is then run thru a used (or new ) hyd hose , frequently armored.
This keeps the errant toolboxes etc from doing damage to the real hose.
A second safety feature , besides the solenoid valve off on switch to a bilge sniffer with a ON light is a mechanical timer , 2 hour max to turn off the solenoid.
If someone forgets , or a kid likes to see the light , the timer is useful.
On fridges , where the gas must be on 100% of the time the fridge and supply must be mounted in self draining overbord wells.
Pour a pail of water under the fridge and in the P tank locker , if the water leaves thru a 1 1/2 (or bigger) hole and is gone rapidly , thats safe enough.
On our lobster style boat the tanks and fridge is simply mounted outside on the self draining after deck.
Yes the fridge must be boxed (there built as inside use items) in a weather resistant ply box , and securely fastened (over 100lbs) to stay in place in a seaway .
But they LOVE!!! the motion and with our antique a 20lb bottle goes 18-20 days, no electric and nice hard ice cream.
Going outside in the AM for breakfast fixens and 1/2 & 1/2 is made up by the close proximity to the beer and salsa in the PM.