"It operates much like a blowtorch ... with an unlimited magazine," one official said.
There are potential targets for the laser in the 5th fleet region, which includes the Persian Gulf, where Iran operates small surveillance drones and is known for swarming and harassing U.S. Navy ships with small, armored speed boats.
Navy researches say so far the laser is 12 for 12 in testing, destroying its targets 100 percent of the time. Officials who briefed the press on the laser gun -- which the Navy calls a "directed energy pulse weapon" -- say it has non-lethal functions too, and may be used to send warning signals to other vessels.
One of its major advantages, the Navy said, is its relatively low cost to operate. "Its weapon round costs about $1 to shoot," said Rear Admiral Matthew Klunder, chief of Naval Research. Although the unit cost is higher -- at around $32 million to produce.
