WatchKeeper™ MetOcean Buoy

A proven, versatile, & reliable data collection buoy for diverse, oceanic environments.

The WatchKeeper™ is a rugged, lightweight environmental monitoring buoy that is easy to deploy and operate. It has been designed and standardized to meet multiple clients’ specific requirements, allowing efficient in-field service-ability and exceptional data management.


Proven TRIAXYS G3 Wave Sensor

Renewable energy source for continued multi-year operation

Able to Integrate with any sensor & telemetry

Real time full wave outputs


  • Weather forecasting
  • Climate studies
  • Operations & safety
  • Resource assessment
  • Maritime safety
  • Marine domain awareness
  • Wind speed & direction
  • Current speed & direction
  • Water levels
Learn more about the WatchKeeper™

Like all AXYS buoys, the WatchKeeper is a flexible and durable platform, hosting the best Directional Wave Sensor (TRIAXYS G3) in the market. Solar panels and re-chargeable batteries provide autonomous power for optimal performance in the harshest marine environments.


Dual primary, two-way telemetry is available with Satellite, Cellular and Radio options. This two-way communications allow clients to remotely configure each device to collect relevant information and perform diagnostics for maximum data availability.

WatchKeeper™ Specifications

A wide array of sensors can be integrated:
  • Wind speed
  • Wind direction
  • Air temperature/relative humidity
  • Solar radiation
  • Barometric pressure
  • Wave height
  • Direction and period
  • Current speed and direction
  • GPS, compass
  • CTD
  • Radiation & water quality sonde

2- way telemetry options:
  • Inmarsat IsatData Pro
  • Iridium

Renewable power supply:
Fully solar powered. Four 35W solar panels, 400 to 500 amp hour battery capacity.

Configurable floatation: 
The WatchKeeper buoy design allows for floatation size configuation to suit the target deployment area.

Diameter options: 1.7m and 2.6m
Navigation aids, alarms and buoy tracking:
  • Standard lamp
  • Radar reflector
  • AIS transponder

GPS package indicates whether buoy is on-station through the AXYS WatchCircle Alarm Position Verification; also includes Buoy Status information (State of charge threshold alert, water intrusion alert) with 3 severity stages, communications inactivity alert.

Proven AXYS designed mooring options:
Inverse catenary, chain, semi-taut, or false bottom.

Data access & management: 
WatchMan500 on-buoy telemetry power and sensor management.

Proven aid-to-navigation (AToN) platform:
Welded aluminum, six watertight buoyancy compartments plus one watertight central compartment for electronics, batteries and sensors. Aluminum superstructure and steel substructure are bolted onto the hull.

Interested in the WatchKeeper™?

We’d love to hear what your needs are, and how our environmental monitoring systems and solutions, may contribute to your success.

Please take the time to fill out our form below and we will contact you promptly.