RS Aqua's exclusive partnership with ALSEAMAR brings the SEAEXPLORER buoyancy glider to the UK and Ireland

ALSEAMAR SeaExplorer

SeaExplorer Downloads


Key Features:

  • Up to 160 days deployment
  • Extremely Low Power
  • Low Cost
  • Depth Rated to 1000m
  • Optional Additional Sensors
  • Data offload via IRIDIUM
These buoyancy gliders are unmanned underwater vehicles with very long endurance, allowing them to be autonomously deployed for up to 160 days & 3200 km.

Propelled by the largest available buoyancy drive, the SeaExplorer silently glides up and down in the water column, and has a proximity sensor in the nose to help slow its descent when near the sea bed. Changes to its ballast orientation control its angle of motion.

The glider is controlled by two independent CPUs, one for navigation and the other for payload and includes large wet & dry payload sections. This is all housed in a highly manoeuvrable and compact wingless design, with two pairs of small rear mounted tail fins providing stability during profiling and ease of deployment for shallow & deep water operations. SeaExplorer X2 can be equipped with up to 6 sensors, with the largest selection of third party instruments able to be implemented on any glider.

Weight & Dimensions
Body Size (D x L) 0.25 m × 2 m + 1 m foldable antenna
Wingspan 56.5 cm Wingless design
Weight 59 kg in air
Vehicle Features
Communications GPS / Satellite (Iridium) / Radio – Triple antenna
Navigation Mode Survey / Virtual mooring / Drifting / Bottoming
Safety Autonomous drop-weight & Strobe light Optional: Locator Pinger (ULB) and/or Argos
Architecture 2 independent CPUs (Linux) for Payload & Navigation
Operational Capabilities
Depth Rating 1 000 m
Ballast Volume 1 000 cc (± 500 ml)
Speed Nominal 0.5 kt / Maximum 1 kt
Battery Rechargeable Li-ion / Primary Lithium
Typical Range (Endurance)* 1 300 km (64 days) / 3200 km (160 days) With a GPCTD-DO, sampling at 4 s
* Range and Endurance largely depends on sensors, sampling strategy and mission environment
Payload & Sensors
General Features Up to 6 sensors in two sections (wet & dry): 9 L / 8 kg Altimeter Opensource C++ fi rmware / Independent Linux CPU Compressed CSV (native) Data downloading through external Ethernet cable (no vehicle opening)
Standard Sensors CTD (pumped or non-pumped) Dissolved Oxygen (Optode or Electrochemical) Chlorophyll / Turbidity / CDOM PAR ADCP Nitrates pCO2 Echo sounder Fluorometers options (Puck)
Exclusive Sensors Hydrocarbons / Sewage / Pesticides µTurbulence Methane Passive Acoustic Recorder (customizable)
On-demand Sensors Metal traces & Micronutrients


Others upon request

SeaExplorer X2 features open source firmware and bottom sensor integration, to provide users a reliable and robust platform for surveys in remote locations and challenging conditions. The glider also includes external battery recharging and Ethernet port access for data download. This removes the need for vehicle opening, therefore significantly reducing costs, logistical requirements and time in between deployments. During surfacing, the glider can alter its orientation to point the antenna skyward, which allows two-way satellite communication for data transmission and receipt of mission updates. To save battery, the platform can switch to a bottoming mode and remain dormant for up to 6 months on the sea floor to save battery.

See how SeaExplorer works: