Ship Request

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  Gyro Dop Nav  -  2018  -  Sentry  
  Project Information  
Project Title: Development of a Low-Cost True-North Seeking Fiber Optic Gyrocompass and Integrated Doppler Navigation System for Precision Navigation of Underwater Vehicles for Ocean Science Project Status: Submitted
Principal Investigator: Louis Whitcomb, JHU Project Institution: JHU
Project ID: 104291 Version #: 4
Date Submitted: 2/17/2014 10:50:00 AM Created By: Louis Whitcomb
Date Last Modified: 3/30/2017 2:05:00 PM URI Serial #: None
Funding Agencies: NSF/OCE/OTIC - 1435818 - Funded
Summary of Field Work: Perform field trials of a new underwater vehicle navigation system with the Sentry AUV. Goal is to do a Sentry downward-looking multibeam survey of a small seafloor feature with the new navigation system running in parallel with the existing Sentry on-board and ship based USBL navigation system. There may be synergy here with other science ops, i.e. these data, if successful, could possibly provide some additional science survey deliverables from what is primarily an engineering performance experiment.

Because the new gyrocompass instrument to be installed on Sentry will not interfere with its standard navigation instruments, these proposed dives could be "piggy-backed" on regular Sentry multibeam survey science dives.

Ship could be any vessel capable of supporting Sentry Ops -- Global Class or Ocean/Intermediate Class would suit.
Summary of Facility Requirements: Shipboard
- Multibeam.
- Support (deck space, cranes, tuggers, etc) for Sentry ops.
- Support for Sentry's Sonardyne USBL (or equivalent)

Sentry with
- Downward Looking Reson 7125 multibeam sonar or equivalent
- 300 kHz Bottom-Lock Doppler Sonar
- Soanrdyne USBL Navigation, with cassius calibration performed very
early in the cruise at a similar depth to site depth.
Summary of other requirements and comments:  
Ship Request Identification
Type of Request: Ancillary Request Status: Submitted
Request ID: 1006854 Created By: Louis Whitcomb
Date Last Modified: 3/30/2017 2:05:00 PM Date Submitted: 2/17/2014 10:50:00 AM
Requested Ship, Operating Days and Dates
Year: 2018 Ship/Facility: Sentry
Optimum Start Date: 1/1/2018 Dates to Avoid: N/A
Earliest Start Date: 10/1/2017 Multi-Ship Op: Yes
Latest Start Date: 8/1/2018 Other Ship(s): Global Class or Ocean/Intermediate Class Ship to deploy Sentry

Operating Days Needed: Science Days Mob Days De-Mob Days Estimated Transit Days Total Days
3 2 1 0 6
Repeating Cruise?
(within same year)
No Interval:   # of Cruises:  

Description of Repeating cruise requirements: Shorter leg desired as we only need 3 days ship time.
Justification/Explanation for ship choice, dates,
conflicts, number of days & multi-ship operations:
Work Area for Cruise
Short Description of Op Area
for use in schedules:
2500m or less
Description of Op Area: Not geographically constrained except that we would like
(a) 2500 m or shallower site to ensure very accurate USBL tracking;
(b) ideally some scientifically relevant topography to map as an engineering experiment to quantify the accuracy of the new navigation system;
(3) a shorter leg would be desirable if possible as we are not utilizing many ship days.
Op Area Size/Dia.: 10
  Lat/Long Marsden Grid Navy Op Area
0° N / 0° E map
335 map
SA02 map
0° N / 0° E map
335 map
SA02 map
  Show Degrees Minutes    
Foreign Clearance and Permitting Requirements
Foreign Clearance Required? No Coastal States:
 Important Info on Foreign Research Clearances  

Are you or any member in your science party bringing in any science equipment items which are regulated for export by the International Traffic in Arms Regulations (ITAR) and/or the Export Administration Regulations (EAR)?
No If yes, have you applied for the necessary permits through your export control office? No
 Questions about ITAR/EAR regulations?

Comments about foreign clearance requirements or
description of any other special permitting requirements
(e.g., MMPA, ESA, IHA, Marine Sanctuaries, etc.)
Port Calls
Requested Start Port Intermediate Port(s) Requested End Port
None, None None,
Explanation/justification for requested
ports and dates of intermediate stops
or to list additional port stops
Not geographically constrained except that we would like (a) 2500 m or shallower site to ensure very accurate USBL tracking; (b) ideally some scientifically relevant topography to map as an engineering experiment to quantify the accuracy of the new navigation system; (3) a shorter leg would be desirable if possible as we are not utilizing many ship days.

 Important Info on Working in Foreign Ports

Science Party
Chief Scientist: Louis Whitcomb, JHU
# in Science Party 3 # of different science teams 1 # Marine Technicians to be
provided by ship operator:
(include in science party total)
Explanation of Science Party Requirements and Technician Requirements We will be a science party of 3 in addition to the Sentry OPS team (usually 4-5).
Instrumentation Requirements That Impact Scheduling Decisions
Unselected Dynamic PositioningUnselected ADCPSelected MultibeamUnselected Seismic
Unselected Dredging/Coring/Large Dia. Trawl WireUnselected Stern A-frameUnselected Fiber Optic (.681)Unselected 0.680 Coax Wire
Unselected SCUBA DivingUnselected Radioisotope use - briefly describeUnselected NO Radioisotope use/Natural level workUnselected Other Operator Provided Inst. - Describe
0 PI-Provided Vans - briefly describe Unselected MOCNESS  
Explain Instrumentation or Capability
requirements that could affect choice
of ship in scheduling.

The purpose of these operations is to test a new attitude reference during multibeam survey operations. These multibeam operations could be combined with other science multibeam operations. It would be desirable, but not required, if the requested days were not contiguous, i.e. 1.5 days for an initial Sentry multibeam survey dive, complete, followed by the ship doing other operations for a short period, then 1.5 days for another multibeam survey dive.

Major Ancillary Facilities (that require coordination of schedules with ship schedule)
Unselected Helicopter Ops (USCG)Unselected Twin OtterUnselected Unmanned Aerial Systems (UAS) 
Autonomous Underwater Vehicle (AUV)
Unselected Other AUVSelected Sentry  
Coring Facility
Unselected Jumbo Piston CoringUnselected Large Gravity Core Unselected MC800 multicorer w/ MISO camera/telemetryUnselected OSU Coring Facility (MARSSAM)
Unselected Other Large Coring FacilityUnselected WHOI Long Core  
Human Occupied Vehicle (HOV)
Unselected AlvinUnselected Clelia (HBOI)Unselected JSL I & II (HBOI)Unselected Other HOV
Other Facility
Unselected MISO Facility - deep-sea imagingUnselected Other FacilityUnselected Potential Fields Pool Equipment 
Remotely Operated Vehicle (ROV)
Unselected JasonUnselected Other ROV  
Seismic Facility
Unselected Ocean Bottom Seismograph Instrument Center (OBSIC)Unselected Ocean Bottom Seismograph Instrument Pool (OBSIP)Unselected Ocean-Bottom Seismometer Program (UTIG)Unselected Other Seismic/OBS Facility
Unselected PASSCALUnselected Portable MCS groupUnselected Portable MCS/SCS groupUnselected U.S. Geological Survey Ocean Bottom Seismometer Facility (USGS at WHOI)
Towed Underwater Vehicle
Unselected ARGO IIUnselected Hawaii MR1 (HMRG)Unselected IMI12 (HMRG)Unselected IMI120 (HMRG - formerly DSL 120A)
Unselected IMI30 (HMRG)Unselected Other Towed Underwater VehicleUnselected Towfish 
UNOLS Van Pool
Unselected AUV Lab Van #1Unselected Clean Lab VanUnselected Cold Lab VanUnselected General Purpose Lab Van
Unselected Radioisotope Lab VanUnselected Wet Lab Van  
UNOLS Winch Pool
Unselected Mooring SpoolerUnselected Portable WinchUnselected Turn Table 
Explain Major Ancillary Facilities
Requirements and list description
and provider for "other" systems.

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