Apparently drug runners are relying on an amazing bit of DIY gadgetry to smuggle cocaine into the US in increasing numbers: home-built submarines. Knocked together in the Colombian jungle, and costing up to a million bucks, they are actually semi-submersibles, since full diving is just a bit too sophisticated. Nevertheless, they can do up to 12 knots — not as fast as a cigarette boat, sure, but they're able to ferry up to 12 tons of the white stuff. And just like the real military versions they're hard to detect, so are proving tricky for the Coast Guard to catch.
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