North Korea tested a new high-speed torpedo system on Monday, with no technical specifications disclosed: the state agency KCNA said the country’s defense research institutes verified the weapon’s combat effectiveness, in a test described as part of the “obligatory activities” to put weapons technology on a highly developed basis.

The North Korean Navy is to receive the new system starting in early 2027, according to the agency. In October, the country had conducted an underwater test of a high-speed, precision-guided torpedo using artificial intelligence technology and fired two types of strategic cruise missiles from what was presumed to be a 3,000-ton submarine.