This is a single-hopped double IPA. (It's pretty much a SMASH ale.) I love single-hopped IPAs where you can really get the character of the hop - and Challenger is an excellent dual-purpose hop. It's a big beer, obviously, and after many, many brews and experimentation now, it's become a neighborhood favorite.
I cask-condition it, and serve it through an Angram engine at about 55 degrees F cellar temp.
The HMS Challenger is one of my best beers. (And when my buds come by expecting to quaff four or five 20 oz. pints, they only try once!)
All the malt carries the bitterness very well. There is some residual sweetness on the palate, with a creamy mouth-feel from service through the beer engine. Only a relatively small amount of crystal is used, (it is an IPA after all), with just a touch of wheat for head retention.