Ship Request

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  PacificArray  -  2021  -  Ocean/Intermediate  
  Project Information  
Project Title: Collaborative Research: Imaging small-scale convection and structure of the mantle in the south Pacific: a US contribution to international collaboration PacificArray Project Status: Submitted
Principal Investigator: James B. Gaherty, NAU Project Institution: LDEO
Project ID: 105438 Version #: 1
Date Submitted: 8/5/2016 12:11:00 AM Created By: James B. Gaherty
Date Last Modified: 5/24/2018 2:24:00 PM URI Serial #: None
Funding Agencies: NSF/OCE/MGG - 1658491 - Funded
Summary of Field Work: We are proposing two 12-15 month broadband OBS experiments in the south Pacific, each requiring cruises to deploy and recover instruments (4 cruises total). The first is centered at approximately 5S, 135W (east of the Marquesas), and the second is centered at approximate 35S, 155W (NE of New Zealand). Primary activity is deploying and recovering 30 broadband OBS for each experiment. We will also utilize multibeam and acoustic backscatter throughout the experiments.
Summary of Facility Requirements: Ship equipment (cranes and deck space) sufficient to support the deploying or recovery of 30 broadband OBS. A modern high-quality multibeam system is also needed.
Summary of other requirements and comments:  
Ship Request Identification
Type of Request: Primary Ship Use Request Status: Submitted
Request ID: 1008802 Created By: James B. Gaherty
Date Last Modified: 5/24/2018 2:24:00 PM Date Submitted: 8/5/2016 12:11:00 AM
Requested Ship, Operating Days and Dates
Year: 2021 Ship/Facility: Ocean/Intermediate
Optimum Start Date: 1/1/2021 Dates to Avoid: must be 12-15 months after previous deployment cruise
Earliest Start Date: 5/1/2020 Multi-Ship Op: No
Latest Start Date: 12/31/2020 Other Ship(s): monohull vessel (Revelle, Sally Ride, Thompson) preferred for OBS recoveries.

Operating Days Needed: Science Days Mob Days De-Mob Days Estimated Transit Days Total Days
15 1 2 12 30
Repeating Cruise?
(within same year)
No Interval:   # of Cruises:  

Description of Repeating cruise requirements: Technically not a repeating cruise since operations not exactly the same, but this is the last in a sequence of 4 cruises. Needs to be 12-15 months after third cruise.
Justification/Explanation for ship choice, dates,
conflicts, number of days & multi-ship operations:
Strongly prefer monohull ship (Revelle, Sally Ride, Thompson, etc.) for OBS recovery operations. Experience suggests that recoveries on the KM are difficult and (in the opinion of the OBS group) potentially unsafe if sea state is bad. We are particularly concerned about sea state given the relatively southern location. We would need to add an additional day or two of science time if the KM turns out to be the only option, as the operation is slower and requires more contingency.
Work Area for Cruise
Short Description of Op Area
for use in schedules:
SW Pacific
Description of Op Area: 500x500 km area northeast of New Zealand
Op Area Size/Dia.: 350
  Lat/Long Marsden Grid Navy Op Area
33.3° S / 158° W map
423 map
SP05 map
35.5° S / 151.7° W map
423 map
SP05 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
Wellington, New Zealand None, Wellington, New Zealand
Explanation/justification for requested
ports and dates of intermediate stops
or to list additional port stops
Tahiti is slightly closer, but we are trying to encourage New Zealand to join the Pacific Array partnership, so for now using NZ. Will work with UNOLS and NSF to choose port with minimal overall costs.

 Important Info on Working in Foreign Ports

Science Party
Chief Scientist: Zachary Eilon, UCSB
# in Science Party 12 # 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 1 Restech with expertise in deck operations and quality multibeam data collection. 4 OBSIP techs for 24 hour ops. Three student watchstanders, two PI/CoPI, 2 New Zealand participants. Might bring a couple of additional student participants if space available.
Instrumentation Requirements That Impact Scheduling Decisions
Unselected Dynamic PositioningUnselected ADCPSelected MultibeamUnselected Seismic
Selected 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.

OBSIP can provide crane/cable requirements but generally the typical UNOLS equipment is sufficient. If WHOI is selected as OBSIP provider, they will have a van. Dredging is only requested if backscatter from previous cruise shows volcanic rocks, and we have extra time to do samples.

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 AUVUnselected 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)Selected 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.
This is the final cruise out of a sequence of 4, each deploying or recovering two OBS arrays. Timing constraints between cruises for OBS group: minimum of 3 months between recovery of the the first deployment and the start of the second deployment cruise, and 4 months is probably safer. The 3-month number is assuming that the ports are ones for which shipping of instruments back to SIO and then out again is not unusually slow (i.e. they typically assume about a month for shipping). For likely ports other than Honolulu or San Diego the shipping might be a bit slower than that, and 4 months is probably safer. Our ideal deployment time on the seafloor is 14 months, with 12 months being the absolute minimum for achieving the primary science goals.

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