Russia's Monster Submarines
The Typhoon-class submarines displaced 23,200 tons in order to accommodate a payload of 20 RSM-52 ballistic missiles. Although most subs are relatively spartan in amenities, the sheer size of the Typhoons made it possible for engineers at St. Petersburg’s Rubin Design Bureau to squeeze in such unprecedented perks as a solarium, swimming pool, and sauna... More here.
A very interesting and comprehensive article.