Floating Boat

I'm not sure what you mean by "floating boat" when referring to a food item found in US restaurants. If you're talking about the dish "S.S. Hangover," which includes a hollowed out loaf of sourdough bread filled with a mixture of beef tongue, egg, and hollandaise sauce. It is currently on the menu of a restaurant called Al's Place in Los Angeles, first served there.

The name refers to the dish feeling like a floating structure. So depending on what you meant by your question, I believe this dish might fit your description. It is a current dish served in at least one restaurant, Al's Place in Los Angeles.

Can I help you with anything else?