SOI HROV concept

Drawings of the new N11k HROV. Credit: Woods Hole Oceanograhic Institution

SOI HROV concept

SOI HROV concept

The new Schmidt Ocean Institute N11k HROV will be equipped with a suite of sensors and equipment to provide it with the capability to collect a broad range of data and samples.  The detailed specifications of the vehicle sensing and sampling equipment are currently under development as part of the HROV design process.  The preliminary list of equipment below provides a high level overview of the HROV instrument package that is subject to change without notice as the vehicle design progresses.

Depth Rating:  Full ocean depth, 11,000 meters
Payload Weight: 180 kilograms
Operational Modes:

  • ROV: via expendable fiber to 11 km
  • ROV: via optical communications to 6 km
  • ROV: via light tether to 6 km
  • AUV: 20 km range

Baseline Sensor Capabilities:

  • Bathymetry, backscatter, water column:  Reson 7125 AUV 3 Multibeam Echo Sounder (6km)
  • Interferometric bathymetry, sub-bottom profiles, sidescan:  Edgetech 2205m (11km)
  • 3-axis magnetic flux:  Applied Physics Systems APS-1520 magnetometer (11km)
  • Color video: Gobeyond:  3DHD, panoramic, and 4k pan-zoom-tilt cameras (11 km)
  • Color photographs:  WHOI/Insight Pacific Digital Still Camera with Strobe (6km)
  • Turbidity:  TBD, probably Seapoint Optical Backscatter sensor (>6km)
  • Dissolved oxygen:  Aandara Optode 4330-fastfoil (11km)
  • Conductivity, temperature, depth:  Seabird SBE-49 (11km)
  • Sound Velocity Probe:  TBD, probably Reson (>6km)
  • Redox potential:  PMEL ORP Eh Probe (>6km)
  • Vehicle position:  Ixea PHINS-3 6-degree-of-freedom Inertial Navigation Sensor (internal, 11km)
  • Vehicle velocities, water currents, altitude: RDI or ROWE Doppler Velocity Log, TBD (11km)
  • Altitude over sea floor, backup altimetry: TBD, probably Novatech (11km)
  • Pressure depth sensors: TBD, probably Paroscientific (11km)
  • Vehicle position on surface:  TBD, Iridium, AIS (11km)

Baseline Sampling Capabilities:

  • 1x   7-function Kraft primary manipulator arm (11km)
  • 1x   6-function Schilling secondary manipulator arm (11km)
  • 8x   6.4 cm dia sediment cores (11km)
  • 2x   30.5 cm x 30.5 cm 30.5 cm UHMW polyethylene biobox (11 km)
  • 1x   multi-chamber slurp system (11km)
  • 5x   2-liter Niskin bottles (11km)

The vehicle will also be designed to accommodate integration of add-on scientific instruments using ethernet, RS-232, RS-485, RS-422, serial, and analog interfaces.  5000 WHr of battery power will be made available for the auxiliary science sensors at up to 80V and 100W per channel.

HROV instrument package that is subject to change without notice as the vehicle design progresses.

SOI N11k HROV Project Timeline

Stage  Timeline
Ready for Scientific Operations Anticipated 2016
Science Verification Cruises   Anticipated 2016
Full Ocean Depth Engineering Trials  Anticipated 2016
R/V Falkor Integration   Anticipated Late 2015/ Early 2016
Initial Engineering Trials Anticipated Late 2015/ Early 2016
Vehicle Construction (Pending Design Completion) Anticipated Start Early 2015
Final Design Completion Fall 2014
Preliminary Design  Completion Fall 2014
Conceptual Design Completed March 2014
N11k HROV Program Objectives Completed November 2013

-Written by Carlie Wiener, Victor Zykov