"FF, sometimes I wonder if your boat says "Winnebago" on the side!"
Nope it sez LUCY, bow and stern , commercial requirement.
I believe RV gear is frequently superior to yachty stuff because 1000 to 10,000 times as much RV gear is made every year.
The volume and competition lowers price from "boat buck" and frequently is vastly better equipment.
A Fantastic DC vent fan is 3 silent speeds and very efficient.
It will function with a thermostat and close automatically in rain.
A RV toilet will use 1/2 to 1 pint to flush , no electric (besides FW ) required
which extends a boats pump out requirements perhaps by 20 to 30 times less often.
A propane fridge does not require daily noisemaker hours , or kill house batt sets with regularity.
20 lb bottle $9.00 here in CT , lasts a month.
AN RV rooftop air cond works very well with dockside low voltage and can be changed out cheaper than a yacht air cond service call.
Both boats and RV have the same desires for comfort for the owners , just RV are willing to spend the research bucks to make superior products.