The Navy's Laser Weapon Problem

Spencer Ackerman:

Laser weaponry has progressed to the point where it’s only a matter of time before they’re disabling ships and burning missiles out of the sky. “Over the next few years,” estimates a new Congressional Research Service report acquired by Danger Room, lasers “capable of countering certain surface and air targets at ranges of about a mile could be made ready for installation on Navy surface ships.” Laser weapons with a 10-mile range aren’t much farther away. If only the ships can handle them.
If the Navy hasn’t come to grips with the imminence of its laser cannons, Congress needs to step in, the report suggests. One major issue: “the potential implications of shipboard lasers for the design and acquisition of Navy ships, including the Flight III DDG-51 destroyer that the Navy wants to begin procuring in [fiscal year] 2016.” In plain English: Unless the Navy starts designing ships to carry laser weapons right from the shipyard, it may never get the futuristic weapons it wants.

The principle at work is pretty simple, from an engineering perspective, although it’s largely been an obscure concern limited to Navy geeks. Unlike weapons that fire traditional ammunition, the Navy’s coming inventory of laser weapons just need electrical power to fire. To get it, they’ve got to tap the on-board power generation systems of ships they’d be mounted on.
But the ships weren’t designed with the expectation that they’d pack laser weapons. Their generators aren’t built to create the kind of juice necessary to power laser guns without siphoning it away from their propulsion systems. It’s a problem that gets worse when considering a laser gun’s “magazine” is as full or as empty as the fuel source it draws from. All that creates exactly the kind of choice the Navy never wants to confront: a choice between effective weapons and maneuverability. A wheezing, slow ship is a tempting target.

Sometimes, the military is it's own worst enemy.  Pretty interesting stuff, though.  I personally think the laser guns aren't very feasible, but the military-industrial complex needs infeasible projects to burn money.