U-235 Outboard Motor

The U-235 is a series of atomic outboard motors designed by Poseidon Energy.

Background
Callville Bay advertises these motors on their entryway sign, under berth rentals and boating supplies.

Appearances
The U-235 series is mentioned only

Behind the scenes
U-235 is a real world component of fuel, short for uranium-235, utilized in nuclear power plants.