MUNIN

MUNIN is a compact autonomous underwater vehicle built by Kongsberg Discovery , the underwater-robotics arm of Norway’s Kongsberg Group. It entered service in 2013 as the smaller sibling to the larger HUGIN family, designed for shallow-water tasks where HUGIN is too big to deploy practically — harbour surveys, port security work, and naval mine-hunting in coastal waters. Where HUGIN typically launches from a research vessel or warship, MUNIN can be lifted by hand from a rigid-hulled inflatable boat and recovered the same way, which puts it in a different operational tier from its sister platform.

The vehicle measures roughly 3.5 metres in length and weighs around 250 kilograms in its base configuration, with a depth rating of 1,500 metres and endurance of up to 24 hours on a lithium-polymer battery pack. Its hull is modular: customers can fit payload sections carrying side-scan sonar, multibeam echosounders, sub-bottom profilers, magnetometers, or — for high-end mine-countermeasures work — synthetic aperture sonar derived from the HISAS line that Kongsberg developed for HUGIN. Navigation is dead-reckoned using a Doppler velocity log and an inertial measurement unit, with periodic GPS surfacing or acoustic positioning to bound the drift. The onboard autonomy handles mission execution, obstacle avoidance, and adaptive search patterns; an operator on the surface can monitor or retask the vehicle through an acoustic link, or simply wait for the recovery rendezvous.

MUNIN’s primary military application is naval mine warfare. Sending an AUV into a suspected minefield to map the seabed at survey resolution removes a crewed minehunter from the threat envelope, and the vehicle’s small size makes it harder for moored or buried mines to detect. The Royal Norwegian Navy has been the most visible operator, drawing on a long Norwegian habit of folding Kongsberg subsea systems into its order of battle. The platform has also found buyers in survey and offshore-energy work, where the same sensor fit serves seabed mapping and pipeline inspection.

Within the AUV market MUNIN sits against Hydroid’s REMUS 600, the General Dynamics Bluefin-21, and a growing field of smaller European entrants. Its distinctive position is the lineage: MUNIN inherits HUGIN’s mission-planning environment, sensor options, and software stack at a fraction of the size, which lets a navy already running the larger vehicle treat the two as a single fleet rather than two separate programmes.