The current name (in the US) is "Pledge with Future Shine".

One large bottle can last for years; just keep it in the dark

There is a trial somewhere..in a magazine or, more likely another forum, maybe Finescale Modeller or Hyperscale where trials have been done on the new formulations and found it to be ok but there maybe some scented formulations which some folk think would be a little odd if applied to your latest war machine. So a bit more searching should reveal more, I'm sorry I cannot rememember where I read it.
Cheers
Forgetful
Adam

What you are looking for is acrylic floor wax. I use a gemneric brand I got from the dollar general strore. Question....Why would you want to spray a battleship? What decals are you putting on the Nagato? Couldn't be enough to warrant sparyi9ng floor polish on the ship i would think. Maybe use a brush and put a spot on whare you are going to decal. I do that with a lot of my decals on tanks and planes.

Another reason to "future" a large ship is to apply oil-based weathering on top of an enamel base. The future coat, left to dry and fully cured for 2-3 days, will protect the underlying enamel paint coats from the thinner used in oil-based weathering, color-modulation/dot-filtering techniques, etc. A mist of Testors dullcote brings the shine down; let the dullcote sit/dry for couple hours before applying the next coat. This technique worked like a charm the ONE time I tried it Just make sure you use a 'mild" thinner for the weathering steps (mineral spirits) and not a "hot" thinner (lacquer).

I still have my first (old) bottle of Future; have no first hand experience with the "new" one.