This Bayfield 25 sloop is located in the Chesapeake area.  Engine compartment space is always at a premium on sailing vessels.  The only location this owner found involved mounting his Xtreme Heater upside-down.  While we suggest mounting our heaters lower in the bilge, this is because heat rises, and it can be more efficient.  IN this case, the heater is dropped down a bit into the engine space, which helps with air circulation.  Xtreme Heaters can be mounted in any orientation.