Bayonet Surf Zone Robotics

Merge the sea and land domain

AUGV for amphibious surf zone robotics operations.

Bayonet Autonomous Underwater Ground Vehicles (AUGV) comes in three sizes to meet the needs of your surf zone robotics mission requirements, starting with the two person portable 150 for smaller payloads and lighter weather and surf conditions, the 250 for harsher conditions and more extensive payload requirements, or the largest in the series the 350 for your heaviest payloads and harshest conditions.

Built on OPENSEA, Bayonet AUGVs provide flexible configurations with the ability to scale the vehicle size and power requirements to meet the demands of any payload, operation, or environment.

The vehicles’ low profile and high stability allows them to penetrate the surf zone with up to 6ft wave height and collect data independent of sea state and weather providing more days on task. 

Low domestic power draw allows for long term station keeping of 100 days for tidal or current observations, the sink gauge will negate any scouring. Program your system to collect tidal data using the pressure sensor and then run the survey mission before you recover it.

Standard range is 10 miles submerged and 24 miles dry, and a 1.5 knot speed provides high sounding density.

Three single operator modes are available: autonomous, tethered or RF link buoy.

Bayonet 150

A two person portable surf zone robotics platform the 150 is ideal for light weather and surf conditions, small boat deployment, and smaller payloads.

  • Dimensions: 33 x 20 x 10 inches
  • Standard Open Deck Space: 24 x 6 inches
  • Weight (with batteries): 125 lbs
  • Duration Dry / Wet: 22 / 10 miles
  • Deck Capacity: 150 lbs
  • Depth Rating: 100m
  • Ground Pressure – Dry / Wet: 0.15 / 0.08 psi
  • Built on OPENSEA
  • Greensea GS4 INS

EOD and MCM Ready

Amphibious Reconnaissance and Neutralization

US and NATO countries are developing programs and CONOPS requiring unmanned systems operate in the surf zone for raid and recon support. The USMC LEON program complements the US Navy’s EOD program by extending Explosive Ordnance Neutralization from the littorals through the beach exit.

Also selected as a finalist in The Defense Innovation Unit’s (DIU) Autonomous Amphibious Response Vehicle (A2RV) program’s rapid prototyping phase. Out of 67 proposals, the Bayonet 250 crawler prototype, was chosen for its exceptional performance and potential to detect, identify, and neutralize naval mines and other explosive hazards in the challenging surf and beach landing zones.

Surf zone robotics for UXO Survey

Demonstrating the power and flexibility of OPENSEA to rapidly integrate and deploy a new sensor suite for the task of identifying UXO in the surf zone while showcasing the capabilities of the Bayonet 250 AUGV.


Operating over 8 days and covering 18 square kilometers in depths of up to 10 feet, amidst wave heights of 4-6 feet in the challenging surf zone, the Bayonet 250 provided a stable and reliable platform for conducting the survey that included a towed sled equipped with White River Technology’s (WRT) marine APEX technology, seamlessly integrated into OPENSEA.


The rapid integration of the sensor sled facilitated the detection and classification of objects, with a buried depth of up to 3 meters based on material composition.

Bayonet 250 with APEX sensor sled attached, used for UXO survey to locate unexploded ordinance in the surf zone.

Bayonet 250

The all around surf zone robotics workhorse of the Bayonet line. The 250 can be assembled, tool free, in field while still maintaining two person portability. The larger footprint and heavier design allows for additional payloads, and operations heavier weather and surf conditions.

  • Standard Dimension: 48 x 52 x 14 inches
  • Heavy Duty Dimension: 60 x 60 x 16 inches
  • Weight (with batteries): 400 lbs
  • Duration Dry / Wet: 24 / 10 miles
  • Depth Rating: 100m
  • Deck Capacity: 250 lbs (max component 75 lbs)
  • Built on OPENSEA
  • Greensea GS4 INS

Beach & Coastal Survey

Surf zone robotics with high seas and foul weather tolerance means fewer survey days lost.

By incorporating a mast on the central frame of the vehicle, we are able to mount a GPS RTK on the top of the mast to get extremely accurate survey data of the surf zone area and beyond. With a known fixed distance from the GPS to the bottom of the sea floor we are able to very accurately collect coordinate data meshed with the navigational data of the vehicle and produce point cloud shoreline data. Typical Bayonet control interface and data collection is standard with the crawler package.

During operations users will find it beneficial to utilize the autonomous navigation of the system and plan out a pre-set navigation plan. During this map planning, users will be able to choose from 3 different map planning options: straight line, circular or sawtooth. In addition to the style of map planning the user can also define the spacing of the map plan. Once a map plan is chosen, the operator will be able to begin the mission plan and allow the robot to run the mission on its own until the last waypoint is achieved.

Bayonet 250 Into the surf

Bayonet 350

The Bayonet 350 is the largest AUGV produced by Greensea IQ. Its size makes it the most capable surf zone robotics vehicle for handling the harshest conditions and largest payloads.

  • Dimensions: 5 x 6 x 1 ft (1.5 x 1.8 x 0.3m)
  • Weight: 600 lbs (272kg) Modular, fits in work sized truck
  • Depth: 109 yards (100m)
  • Speed: 1.8km/hr
  • Deck capacity – dry: 350 lbs (159kg)
  • Built on OPENSEA
  • Greensea GS4 INS