SAAB CB-90: If I won the Lottery, there would be ways to tell

 

SAAB CB-90

The boat's top speed sits in a blistering bracket of 40 to 45+ knots (approximately 46 to 52 mph), and are outfitted with twin Scania DSI14 V8 diesel engines. Combined, they produced about 1,250 horsepower (625 hp each).  A CB90 burning through diesel at 40+ knots drinks fuel at a rate of roughly 50–60 gallons per hour per engine. The engine power doesn't go to a propeller. Instead, the crankshafts connect directly to a pair of Kamewa FF mixed-flow waterjets (originally built by Kamewa, now a part of Kongsberg/Saab systems). Instead of pushing water with exterior blades, the waterjets act like massive marine vacuums. They suck water in through intake grates beneath the hull and use internal impellers to blast it out of narrow nozzles at the stern with immense pressure.

It can execute incredibly tight, banking turns at maximum speed without flipping or losing control, throwing up massive walls of spray.  To turn, the boat doesn't use a rudder. Hydraulics physically pivot the waterjet nozzles left or right, vectoring the massive thrust instantly. This is why the CB90 can cut impossibly sharp, banking turns at 45 knots.

Because there are no exposed propellers or rudders underneath the hull, the boat draws less than 3 feet of water. It can fly over hidden rocks, sandbars, and debris that would tear the bottom out of conventional patrol boats.

Splitting the front of the boat is a unique, narrow, one-man bow ramp. As soon as the boat hits the beach, the ramp drops, and a half-platoon (up to 21 fully equipped soldiers) can sprint out of the protected interior straight onto dry land within seconds

Over the exhaust nozzles sit heavy metal cups called "reversing buckets." When the pilot executes a crash-stop, these buckets drop down over the waterjets, redirecting 100% of the high-velocity stream forward underneath the boat. This acts like a massive thruster brake, bringing an 18-to-24-ton vessel to a dead stop in just over two boat lengths.

Wanna go to the beach?  As the CB90 speeds toward the shore, the crew drops a heavy anchor out of the back of the boat, letting the line trail behind them into deep water as they purposefully drive the reinforced bow straight onto the beach to let passengers step out. When it's time to leave, instead of gunning the engines and risking damage from shallow sand and rocks, a motorized winch simply reels that rear anchor line back in—using the buried anchor like a giant handle to smoothly tow the boat backward into safe, deep water.