Greensea IQ

Autonomous Amphibious Crawler Robots for Underwater Rescues, Surveys & Monitoring

United States of America
Greensea IQ
Autonomous Amphibious Crawler Robots for Underwater Rescues, Surveys & Monitoring
10 Cordage Park, Suite 243, Plymouth, MA 02360, USA United States of America Regional offices

Greensea IQ is a leading developer of rugged amphibious robots designed for operations in the most challenging of marine environments. Deployable from shore or at sea, the underwater crawler vehicles are highly tolerant of harsh weather and sea states, can operate at any time of day or night, and are ideal for a wide range of military, commercial and industrial applications.

amphibious robots

Amphibious operations in challenging waters

Autonomous Crawler RobotOur Bayonet AUGVs are highly versatile unmanned amphibious vehicles that can traverse land and the seabed, with the ability to reach depths down to 300 metres. The subsea crawler robots feature three modes of operation – fully autonomous, tethered, or via RF link buoy.

Thanks to their extremely low profile and high stability, the crawler robotic vehicles can operate in the surf zone and survive waves up to 6ft in height. The low power draw allows them to provide a static continuous observation capability for up to 100 days.

Advanced autonomy and precisionautonomous amphibious robots

Bayonet AUGVs are built around the OPEN Software and Equipment Architecture (OPENSEA) marine robotics platform, providing advanced autonomy and navigation technologies, and allowing hassle-free integration of a wide variety of equipment and devices.

The systems blend together single or dual RTK-capable GNSS receivers with advanced inertial navigation to provide precise navigation even when submerged.

The built-in inclinometer and pressure sensor deliver high-accuracy depth measurements.

Superior adaptability and mission performance

All Bayonet underwater robots can be equipped with a variety of field-swappable payloads, and we can also integrate custom and third party sensors for you.

Crawler RobotCrawler robots can also be equipped with a towable non-metallic sled that provides additional space for payloads as well as AUV delivery systems and extra power sources.

Possible integrations include:

  • Side scan and multibeam sonar
  • Video and photographic camerasSearch and rescue robot
  • Magnetometers
  • Acoustic Doppler current profilers (ADCP)
  • CTD (conductivity, temperature, and depth) sensors
  • Dissolved oxygen probes
  • Water sampling equipment

All three Bayonet robotic vehicles are also available in a heavy-duty configuration with extra torque and power for enhanced durability and payload capacity.

bayonet-150 amphibious robot crawler

Bayonet 150

One-person portable amphibious robot for lighter weather conditions and smaller payloads

  • 33 x 20 x 10 inches
  • Weight 125 lbs with batteries
  • 150 lbs deck capacity
  • Range 22 miles dry, 10 miles wet

More information >

bayonet-250 subsea crawler robotBayonet 250

Mid-range underwater crawler for nearshore, estuarine and inland environments

  • 48 x 52 x 14 inches
  • Weight 250 lbs with batteries
  • 250 lbs deck capacity
  • Range 24 miles dry, 10 miles wet

More information >

bayonet-350 underwater crawler robotBayonet 350

Largest subsea crawler for harshest conditions with maximum payload capacity

  • 5 x 6 x 1 ft
  • Weight 600 lbs with batteries
  • 350 lbs deck capacity
  • Range 38km+ at 1.8km/hr

More information >


survey robot

Commercial & Industrial

Bayonet amphibious robots can undertake a variety of tasks regardless of weather and sea state conditions, including cable surveys, dredge monitoring, hull inspections, and port and offshore wind farm surveys.

search and rescue robot (SAR robot)


Able to reach areas and withstand conditions that other systems cannot, our unmanned amphibious vehicles can undertake naval and defense missions such as EOD clearance, mine detection, intelligence gathering, and search and rescue (SAR).

environmental monitoring robot


With the ability to carry a wide range of specialist environmental, oceanographic, hydrographic and benthic payloads, our subsea crawlers are ideal for longterm data gathering for research and monitoring.

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Regional Offices & Locations
Greensea IQ United States of America 10 Cordage Park, Suite 243, Plymouth, MA 02360, USA Contact Website
Headquarters United States of America 10 East Main Street, Richmond, VT 05477 USA Website