U.S. Navy tests new anti-mine unmanned surface vehicle

The U.S. Navy has been testing the new anti-mine unmanned surface vehicle called Unmanned Influence Sweep System, or UISS,  aboard Military Sealift Command’s expeditionary sea base, USNS Hershel “Woody” Williams (T-ESB 4), into the Chesapeake Bay.

The new unmanned surface vehicle (USV) is a mine counter measure platform and the evolution was the first time a USV has been launched and recovered by a Military Sealift Command ship, according to a Navy news release.

The UISS employs the influence sweep system, which is designed for sweeping of magnetic, acoustic, and magnetic/acoustic combination mine-types. The system tows the modified Mk-104 system acoustic generator and a magnetic minesweeping cable.

- ADVERTISEMENT - CONTINUE READING BELOW -

The USV will support minehunting operations, including detection, identification, classification and localization of volume and bottom mine-like contacts.

The UISS system is capable of being launched and recovered by the Littoral Combat Ship (LCS), from other Vessels of Opportunity (VOO), or from shore sites.

The unmanned surface vehicle already has undergone in-water trials with Navy’s Littoral Combat Ships and demonstrated its performance with multiple payload packages including side-scan sonar, mine neutralisation, nonlethal weapons, and intelligence, surveillance and reconnaissance.

Sea mines pose a significant threat to U.S., allied and commercial shipping, particularly in navigation choke points and transit lanes. With the sweep payload installed, USV will satisfy the U.S. Navy’s need for a long duration, organic (off-board) minesweeping capability. The use of USVs also increases the safety factor for the Sailors employing the systems by taking them out of the mine field.

Photo by Bill Mesta
Photo by Bill Mesta
Photo by Bill Mesta
Photo by Bill Mesta

Readers who wish to follow our weekly coverage can subscribe to the Weekly Defense Roundup.

If you wish to report a grammatical or factual error in this article, please let us know by using the online form.

Executive Editor
  • In this story
  • USA

Support The Defence Blog

Independent reporting takes resources. Join us on Patreon.

Become a patron

More Like This

U.S. Army buys more of its toughest Arctic combat vehicle

The U.S. Army awarded BAE Systems Land and Armaments a $35 million contract modification on June 30, 2026, for additional production of the general-purpose...

AEVEX wins $50M deal for GPS-resistant strike drones

AEVEX Corp. secured a $50 million contract from the United States Air Force on June 30, 2026, to continue expanding unmanned mission-support capabilities for...

U.S. Air Force spends $471M to fix tanker parts supply problem

The U.S. Air Force awarded a combined $471 million in contracts to 28 different companies on a single day, spreading the work of exchanging...

U.S. Navy orders $312M more of its anti-missile jamming system

Northrop Grumman secured a $312 million contract from the U.S. Navy on June 24, 2026, to produce additional Surface Electronic Warfare Improvement Program Block...

L3Harris wins $614M deal to keep elite aircraft safe from missiles

When a U.S. Special Operations helicopter or tiltrotor flies into hostile territory and an enemy radar locks onto it, the crew has seconds to...