海上幽灵：无人驾驶的半潜式毒品潜艇

Fast, stealthy, and cheap—roboticized, semisubmersible drone boats The first ones are coming ashore. BY EDUARDO ECHEVERRI LÓPEZ O n a bright morning last April, a surveillance plane oper- ated by the Colombian mil- itary spotted a 40-foot-long shark-like silhouette idling in the ocean just off Tayrona National Park. It was, unmistakably, a “narco sub,” a stealthy fiberglass vessel that sails with its hull almost entirely underwater, used by drug cartels to move cocaine north. The plane’s crew radioed it in, and eventually nearby coast guard boats got the order, routine but urgent: Intercept. …