The Boat Wash is an underwater facility used for cleaning the exterior of boatmobiles. The building is designed like a peach-colored washing machine that contains a light-brown door seal with a transparent blue window. At the upper top of the "machine" is the industry's name in pickle green lettering. There is also a pink arrow sign on a bamboo pole right next to it that points at the building and has the word "wash" in yellow writing as well as blueish-purple dots.
In "Drive Happy," the Boat Wash received a redesign. It now looks similar to a car wash, and is comprised of a long tunnel-shaped building that is purple with green girders on it. On top of the Boat Wash is a large multi-colored sign with the words "Boat Wash" on it, along with an arrow pointing to the building.
Role in series
After robbing an electronics store (which SpongeBob was unaware of), Stickyfins needs to find a place where he can launder all the dollar bills he's received. SpongeBob knows just the right place, but first has to get his boat cleaned. To do so, he drives through the Boat Wash and starts driving crazily on his way out, much to Stickyfins' annoyance.
After Coupe refuses Spongebob's orders and decides to do what he wants, his first destination is the Boat Wash so he can get washed. During the wash, SpongeBob gets blasted in the face with water.
"The Ballad of Filthy Muck"
When SpongeBob needs to wash Filthy Muck's filth away to please the angry mob chasing them, the first place SpongeBob goes to is the Boat Wash. However, the Boat Wash fails to clean Filthy Muck, and the angry mob chases SpongeBob and Filthy Muck away before realising that the Boat Wash extinguished their torches.