- Dorado- class autonomous underwater vehicle (AUV)
- Named the D. Allan B.
- Size: 0.53 meters (1.7 feet) in diameter; 5.3 meters (17.3 feet) long
- Three modular sections
- Hull: ABS plastic (acoustically transparent at the relevant frequencies and provides structural strength)
- Syntactic foam between housings provides buoyancy
- Weight: 680 kilograms in air
- Endurance: 17.5 hours
- Speed: 1.5 meters per second (5.4 kilometers per hour, or 3 knots)
- Depth rating: 6,000 meters
- The AUV is shaped similar to a torpedo
- Altitude: typically flown 50 to 100 meters above the seafloor
- Inertial Navigation System (INS) and Doppler Velocity Log (DVL) navigation: rated to 6000 meters 1
- Range: 55-85 kilometers depending on sonar load
- Turning diameter: less than 20 meters
- Maximum climb/dive rate: more than 30 meters/minute
- Operable: From MBARI R/V Rachel Carson and R/V Western Flyer, and from blue water UNOLS vessels.
- 5 kilowatt-hour Eagle-Pitcher secondary cells in a 1 atmosphere glass housing
- 3 x 2 kilowatt-hour lithium-polymer pressure-tolerant batteries
- Freewave RF modem, 57.6 kilobits per second.
- Iridium phone
- Radio Direction finder (RDF)
- Sonardyne Fusion Ultra-short baseline (USBL) MF, 19 kilohertz (kHz) down, 27 kilohertz (kHz) up
- Slight positive buoyancy (~8 pounds buoyant)
- Emergency 10 kilogram drop weight with internal and remote acoustic trigger
- Homerpro acoustic beacon, Radio Direction Finder, strobe light
- When on the surface, Iridium calls home to give a position
1 Paduan, J.B., Caress, D.W., Clague, D.A., Paull, C.K., Thomas, H., “High-Resolution mapping of mass wasting, tectonic, and volcanic hazards using the MBARI Mapping AUV”, International conference on seafloor mapping for geohazard assessment, Forio d’Ischia, Italy, May 11-13, 2009.