Russia’s Typhoon-class submarine is the biggest ever built. It’s longer than a football field. It has a swimming pool. Inside. How much? Roughly $5 billion in today’s money.
That’s the cost of a small city. Or 50,000 electric cars. It’s so huge it can crush a cruise ship by accident. Just kidding. Mostly.
Then there’s the USS Jimmy Carter. It’s a modified sub that costs over $3.2 billion. No one knows exactly what it does. It’s for "special operations" and "surveillance." Translation: James Bond stuff.