The company Kraken Technology Group announced this in its X (formerly Twitter) account;

MANTA is a family of unmanned offshore platforms designed to perform a variety of reconnaissance and strike missions.

Depending on the version, maritime drones are designed to use reconnaissance or strike payloads weighing from 25 kilograms to 5 tons.

The peculiarity of the platform is that it does not use screws for immersion and movement under water.

K4 MANTA. Image: Kraken Technology Group.

Depending on the version, the operating depth ranges from 2 to 30 meters. The MANTA family powertrain can be either electric or hybrid.

This technology, coupled with the low-profile carbon fiber construction, low acoustic noise, and small thermal footprint, makes the MANTA family a very difficult target to detect and defeat.

The developer claims that the drones of the family can autonomously perform tasks for an average of 10 days.