She's the biggest, meanest, most lethal weapon in the arsenal of a global power. The USS Nimitz, like the whole US Navy, has to be ready for any mission, anywhere in the world. That's why she undergoes a rigorous - and often dangerous - evaluation before every deployment.

If there's a muscleman among ships, then its name is MV Fairplayer. A tour of the Jumbo Fairplayer, the biggest and strongest in a new class of heavy-lift mega ships.

Just off the coast of South Africa, a futuristic remote crawler creeps along the ocean floor. Its high tech nozzle is sucking up seabed gravel that's full of diamonds, and hoovering them up to the mother ship on the surface - MV Peace in Africa - the world's biggest underwater mining vessel.

In a country whose economy is almost 100% based on fishing, Akamalik, the high-tech star of Royal Greenland's trawler fleet, plays a critical role.

In the midst of a giant offshore wind farm, a fantastical ship comes to a stop, jacks up on six enormous legs, and plants itself on the ocean floor.

HDMS Absalon, one of the most modern warships in the world, has set sail to stop modern-day pirates off the coast of Somalia.