Although tugboats are small, they are among the most powerful vessels on the water. Designed for strength over speed, these small powerhouses use reliable diesel engines and powerful propulsion ...

CargoKite is building ‘micro’ ships that are more environmentally friendly—but they’re also faster and more nimble than traditional cargo ships. A typical cargo ship is massive—the largest is more ...

It's easy to equate strength with size. Does a great white shark wield more power than a tiny sprat? Well, yes, but there's much more to the equation than that. Relative to its body weight, the horned ...