US Navy USS Portland LPD 27 conducts laser weapon system firing test.

U.S. Navy amphibious transport dock ship USS Portland (LPD 27) successfully disabled an unmanned aerial vehicle (UAV) with a Solid State Laser - Technology Maturation Laser Weapon System Demonstrator (LWSD) MK 2 MOD 0 on May 16, 2020.
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USS Portland (LPD 27) conducts a Solid State Laser - Technology Maturation Laser Weapon System Demonstrator (LWSD) test in the Pacific, May 16, 2020. (Picture source U.S. Navy)

LWSD is a high-energy laser weapon system demonstrator developed by the Office of Naval Research and installed on Portland for an at-sea demonstration. LWSD's operational employment on a Pacific Fleet ship is the first system-level implementation of a high-energy class solid-state laser. The laser system was developed by Northrup Grumman, with full System and Ship Integration and Testing led by NSWC Dahlgren and Port Hueneme.

“By conducting advanced at sea tests against UAVs and small crafts, we will gain valuable information on the capabilities of the Solid State Laser Weapons System Demonstrator against potential threats,” said Capt. Karrey Sanders, commanding officer of Portland.

The U.S. Navy has been developing directed-energy weapons (DEWs), to include lasers, since the 1960s. DEWs are defined as electromagnetic systems capable of converting chemical or electrical energy to radiated energy and focusing it on a target, resulting in physical damage that degrades, neutralizes, defeats, or destroys an adversarial capability.

Navy ships face an increasing number of threats in conducting their missions, including UAVs, armed small boats, and adversary intelligence, surveillance and reconnaissance systems. The Navy's development of DEWs like the LWSD, provide immediate warfighter benefits and provide the commander increased decision space and response options.

“The Solid State Laser Weapons System Demonstrator is a unique capability the Portland gets to test and operate for the Navy, while paving the way for future weapons systems, “ said Sanders. “With this new advanced capability, we are redefining war at sea for the Navy.”

USS Portland (LPD-27) is the 11th San Antonio-class amphibious transport dock ship of the United States Navy. While it is the third ship to bear the name 'USS Portland,' it is the first ship to be named solely after the largest city in Oregon.