The Navy has a new boat, called the "Stiletto", that features a double-m-shaped hull which gives it the ability to navigate in extraordinarily shallow waters. The hi tech boat also features a wide range of sensors and radars. Apparently the boat is in operation now, according to one report:
Recently a group of drug runners in Florida tried to elude one by sailing near reefs and sandbars at 42 knots and skimming over water less than 5 feet deep. But the Stiletto kept on coming.
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