Alvin Specifications


Length: 7.0 meters (23.1 feet)
Beam: 2.6 meters (8.4 feet)
Draft: 2.4 meters (7.9 feet) surfaced
Height: 3.6 meters (11.6 feet)
Operating Depth: 4,500 meters (14,764 feet)
Normal Dive Duration: 6-10 hours
Gross Weight: 20 metric tons (40,000 pounds)
Speed: 0-2 knots (0-2.3 mph)
Science Basket Payload: 181.4 kilograms (400 pounds)
Personnel Sphere Volume: 4.8 cubic meters
Personnel Complement: 1 Pilot, 2 Observers

5 viewports: 3 forward (17” diameter), 2 side (12” diameter)
Overlapping fields of view

Electrical Power
2 banks of lead-acid batteries, each 120 V, 140 AH

Redundant acoustic telephones (voice or code)
Marine band (VHF) radio
Sound-powered phone
Digital datalink through USBL/SMS

2 Insite Mini Zeus HD cameras with individual pan and tilt
2 Kongsberg OE14-522 pan/tilt/zoom HD cameras near viewports
Additional situational cameras available
Three 7” HD LCD flat panel displays for in-hull viewing
HD video recorders
Optional HD video/still frame camera for mounting on manipulator
Hand-held digital still and video cameras

12 lighting channels, each 10A, fused at 80A total
Multiple positionable LED lamps
Situational and emergency lighting
Down-looking survey lighting
Lasers for optical size reference

7 thrusters
Forward, reverse, lateral capability
Auto heading, altitude and depth

Vehicle Sensors
Fiber-optic gyrocompass: Octans or PHINS
Redundant depth sensors
Teledyne RDI Workhorse 600kHz Doppler velocity log
Sonardyne AvTrak USBL transponder
GPS sensor

Acoustic Sensors
Reson SeaBat 7125 dual frequency multibeam seafloor profiling sonar
Imagenex 881 profiling sonar
Tritech Seaking S8540 dual frequency scanning sonar

Dedicated in-hull navigation with touch screen display
Bottom tracking Doppler velocity log
Auxiliary long baseline acoustic navigation system
Sonardyne Homer Pro location beacons

Schilling Titan 4 with 7 degrees of freedom
ISE with 6 degrees of freedom
16 square foot sample basket, payload 181 kilograms (400 pounds)
Elevator (mission configurable):
    Free ascent
    Payload: 90 kilograms (200 pounds)
Scientific sampling devices: Water samplers, tube corers and bio boxes

Scientific Instrumentation Support
Power: 12, 24 and 120 VDC switched circuits available
Hydraulics: 6 available hydraulic circuits
SeaBird SBE49 CTD
Digital sensor interface available
Hard-wired sensor interface available
Integrated data system
In-sphere laptop computers