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Specifications

Information on this page is updated as frequently as possible. However, for cruise planning purposes and specific application details, please contact the Deep Submergence Group directly. For technical questions, contact Matt Heintz (mheintz@whoi.edu); for general questions, contact Catherine Offinger (coffinger@whoi.edu). Requirements for the support vessel capability can be found here.

Jason

Depth Capability: 6,500 meters
Size: 3.4m (134 in.) length, 2.4m (96 in.) height, 2.2m (88 in.) width
Weight: 4,672 kg (~10,300 lbs.) in air (approx.)
Maximum Sampling Transect Speed:  0.4 knot on flat bottom surface, 0.1 knot up-slope
Maximum Transit speed: 1 knot, no sampling, in layback mode
Maximum On-Bottom Transit Speed (no sampling): 0.5 knot
Maximum Vehicle Speed (on site, within tether range): 1.5 knots forward, 0.5 knot lateral, 1.0 knot vertical (**1 knot equals 0.5 meters/second)
Descent/Ascent Rate: 30 meters/minute (98.4 feet/minute)
Propulsion: Six brushless DC electric thrusters, each providing 250 lbs. of thrust
Tether (Two Body mode): 50m long, 20mm (0.8 in.) diameter, neutrally buoyant
Armored Cable Umbilical (Single Body mode): 7 kilometers (23,000 feet) length, 21.5 mm (.842 inch) diameter

Medea

Depth Capability: 6,500 meters
Size: 2.3 m (90 in) long, 1.5 m (60 in) high, 1 m (40 in) wide
Weight:  1,360kg (3,000 lbs.) in air (approx.)
Maximum Tow Speed: 1 knot
Main Cable: UNOLS standard 17mm (0.681 in.) steel-armored, electro-optical cable