The 18 Ohio-class submarines are arguably the most destructive weapons on the planet. Here’s everything you need to know about these exceptional military machines. The 18 Ohio-class ballistic-missile submarines are some of the most exceptional military machines in human history, packing more nuclear or conventional firepower than any other platform on air, land, or sea. One leg of America’s nuclear triad, the subs are designed to be ultra-quiet, bristle with nuclear weapons, and survive to carry out their mission at all costs. The 14 nuclear-armed Ohio-class submarines ensure that hundreds of nukes are resting quietly in the world’s oceans, ready...