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Technology Factsheet

Bluefin Spray Glider

Category: Robotics > Characterization and Inspection > Underwater System
Reference # : Model No :

The Bluefin Spray Glider is a deep-diving, buoyancy-driven autonomous underwater vehicle. The Spray collects water column data profiles using a pumped, conductivity-temperature-depth (CTD) sensor and other instruments. Deployments of up to 6 months can be achieved with a single set of batteries.

Site: *
Size:Large (20-100kg/40lb-200lb, 60cm-120cm/24in-48in)
TRL:Operational (9)
TRL2: *
Tether: *
Waterproof: *
Payload: *
Reach: *
Manipulator: *




The Spray varies its buoyancy using a hydraulic pump and changes its attitude by shifting internal battery packs for pitch and roll. A set of passive wings with embedded antennas provides communications and facilitates forward motion through the water. This approach enables the vehicle to glide up and down along a saw-tooth dive profile using a fraction of the energy used to drive propellers in traditional AUVs.

The Spray is rated to 1,500 meters, making it ideal for open ocean applications, while still able to profile shallow depths.

The standard oceanographic-grade CTD sensor actively pumps seawater through the instrument, significantly reducing biofouling and extending vehicle endurance, especially in warmer climates where biogrowth is more prevalent.

Diameter: 8 in (20 cm)
Length: 84 in (213 cm)
Weight (Dry): 115 lb (52 kg)

Operational Experience:



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