Sea-Dog Boat Hook Silicone Squeegee Lighting Inside the water heater is

Inside the water heater is an electrical heating element and usually a coiled tube called a heat exchanger

Not for SAE versions

Along the coast

Pro Baitmaster™ - 12VDC

Sea-Dog Boat Hook Silicone Squeegee Lighting Inside the water heater isBoat Hook Silicone Squeegee Heavy duty silicone blade provides a wide (12) coverage area to easily clean and clear any type of window or marine surface. Comfort grip allows for manual use or attach to any Sea Dog boat hook and all universal threaded devices. Universal Acme Thread WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information