Specifications

NUI can reach depths of 5,000 meters (16,400 ft), traverse tens of kilometers during a single dive, and work at stand-off distances of at least 5 kilometers from a support vessel, enabling access beneath ice shelves, floating sea ice, and deep-sea environments. Equipped with acoustic, chemical, and biological sensors, along with a seven-function electro-hydraulic manipulator arm, it supports detailed surveys, sample collection, and in situ experiments. Together, these capabilities open previously inaccessible regions to scientific exploration, advancing research on glacial melt, ice-ocean interchange, marine ecosystems, and Arctic hydrothermal systems.

Specifications	Range	10–40 km depending on activity (sampling, mapping, or transiting). Typical survey or transit speed 0.75–1 m/s. Closed-loop control of heading, depth, ice-relative and geo-referenced position (within 150 m of ice and seafloor, respectively). Actuated workspace doors for in situ transition between low-drag transit and intervention configurations.
	Air Weight	2200 kg (4,850 lbs)
	Depth Rating	5000 m (16,400 ft)
	Battery	22 kWhr lithium-ion
	Time	On-board precision atomic clock synchronized to GPS, 1 ppb drift rate/year.
Navigation	Inertial	IXSea Phins INS/north-seeking gyro-compass; back-up magnetic compasses (3)
	Depth	Paroscientific Nano-Resolution pressure sensor; SBE 49 FastCAT back-up
	Acoustic	up/down 300 kHz ADCP/DVLs; One-way travel-time acoustic navigational aiding at 10 Hz, 3.5 kHz.
Communication	Tether	Fiber-optic communications-only Gb Ethernet, 20 km (10 mi)
	Acoustic	LF (3.5 kHz) 20-300 bps for ship to vehicle (20 km range); HF (10 kHz) 300 bs, ship-to-vehicle (1-5 km range), vehicle to sensor; vehicle to vehicle
Mapping	Multibeam	Nortek WBMS Long Range (200 kHz – 700 kHz). 200 m range, 1 m resolution at typical mapping altitude. Up, down or side-looking. Water column, backscatter and snippet data.
	Subbottom	Edgetech 2205 broadband SBP 4-24 kHz
Imaging		Real-time color HD-SDI video on internal pan/tilt/zoom (Kongsberg OE12- 522); LED lighting (8 DSPL Sphere, dimmable), 5 channels SD, encoded on board; SubC Rayfin UHD (4k) video and 21 MP still camera.
Manipulation and Sampling		Kraft Telerobotics 7-function manipulator arm and custom high-efficiency HPU. Six-chamber slurp sampler.
Sensors	Chemical	Seabird FastCAT-49 pumped CTD, AMT Redox probe, METS methane sensor
	Biological	WetLabs FLNTURTD Chl/backscatter fluorometer (0-30 ug/l, 0-10 NTU)
	Auxiliary Payload	Native support for 10 auxiliary sensors; ~100 kg wet weight, 500 Whr Energy, 1000 W total (6 high-power channels with Gb Ethernet and/or RS-232, 100 W per channel, 6 low-power channels 3-15 W per channel, RS-232); 4 hardware trigger lines; all channels logged on board and delivered in real-time topside; other communications protocols on request.
Basket		50 lb wet weight, reconfigurable with push cores, grabs, bio-box (1), nets, etc., and custom tools like gas-tight samplers. Up to 90 lb wet weight with removal of slurp.