Woods Hole Oceanographic Institution

Cruise Planning Synopsis

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AR21 / Irminger Sea 4


RV Neil Armstrong

Cruise Party

Paul Matthias: Principal Investigator
Woods Hole Oceanographic Institution LOSOS 213, MS#57 Woods Hole, Ma. USA 02543
+1 508 289 3672

George Tupper: Chief Scientist
Woods Hole Oceanographic Institution Clark South 182B, MS#30 Woods Hole, Ma. USA 02543
+1 508 289 2693

Departure: Jul 28, 2017


Arrival: Aug 30, 2017


Operations Area

Southeast of Greenland
Lat/Lon: 59° 52.0′ N / 39° 30.0′ W
Depth Range: 2600 / 2800
Will the vessel be operating within 200 NM of a foreign country? Greenland/Denmark
Are visas or special travel documents required? no

Science Objectives

To carry out the recovery and redeployment of the NSF Ocean Observatories Initiative (OOI) Irminger Sea Array, servicing four moorings and up to four gliders.  The platforms will carry multidisciplinary instrumentation and provide the capability for real time communication of data and control of sampling.  A surface mooring will instrument the sea surface and upper ocean, capturing the surface forcing and upper ocean variability.  A profiling mooring will measure through the water column.  Two additional taut subsurface moorings and the gliders will complete the capabilities to obtain vertical profiles and sample the mesocale (10s to 100 km) variability at the site.

Science Activities

The following activities are planned: 
1) Validate the bathymetry of the site to check the planned positions for the four moorings of the second deployment; 
2)  Deploy the four new moorings (1 surface & 3 subsurface)
3)  Recover the four moorings deployed in 2016
4) Deploy up to four gliders in support of horizontal and vertical sampling in and around the array 5) Recover glider deployed in 2016
6) Carry out shipboard sampling in support of calibration and validation of the deployed sensors on the moorings and gliders and to add to our knowledge of the site.

Additional Info

Pre-cruise Planning Meeting: Visit WHOI
Meeting Notes: June 10 if possible
Media personnel on board: none


Supporting documentation:

Notes: Please contact OOI for official cruise plan.


Funding Agency: NSF
Grant or contract number: 0123456789

Scientific Instrumentation for R/V Armstrong

Other Science Vans:

Shipboard Equipment

Bathymetry System 12 kHz
ADCP 300 kHz
Bathymetry System 3.5 kHz
ADCP 150 kHz
Deionized Water System
12 kHz Pinger for Wire Use
EM122 (12 kHz) Multibeam Echosounder
EK80 Sonar
Dynamic Positioning System
ADCP 38 kHz

Shipboard Communication

Basic Internet access via HiSeasNet

CTD/Water Sampling

911+ Rosette 24-position, 10-liter bottle Rosette with dual T/C sensors
Wet Labs FLNTURTD Combination Flourometer and Turbidity Sensor

Critical CTD Sensors

Hydrographic Analysis Equipment

Dissolved Oxygen Titration System (Brinkmann Titrator)
Oxygen Sample Bottles (available in 150 ml sizes)
Salt Bottles (2 cases of 125 ml provided)

MET Sensors

Barometric Pressure
Air temperature
Relative Humidity
Wind speed and direction
Short Wave Solar Radiation

Sample Storage

Freezer -70°C 3.2 cu. ft. ea.
Storage Notes:


Navigation Notes:


Other Portable Winch
UNOLS Winch Pool
Winch Notes: OOI will bring our own Lebus winch (self spooling) and have reserved a TSE winch spooler from east coast winch pool (Brian Guest).
Winch Power needs: 440V/100amp

Wire use and application

CTD Winch with .322" Electro-mechanical wire
Trawl Winch with 9/16th trawl wire
Winch Notes: 1) 9/16 trawl only if we need to drag.
2) .322 for CTD ops.

Standard Oceanographic Cables

Slip ring required? no
Non-standard wire required? no
Traction winch required? no
Science Van 1
Type/size: Ball Van (8x20) Location: main deck
Water: no Power:no
Science Van 2
Type/size: Rigging Van (8x20) Location: Main Deck
Water: no Power:yes
Science Van 3
Type/size: Flat-rack Location: on top of rigging van
Water: no Power:no

Special Requirements

Elecrical Power: yes Identify Winches and Rigging Van, Rigging van needs 480V/60amp
Equipment Handling: no Identify: 
Inter/intraship Communications: no Identify: 
Science Stowage: yes Identify: samples after crusie and some boxes in hold
Water: no Identify: 

Additional Cruise Items/Activities

Explosive Devices:no Portable Air Compressors:no Flammable Gases:no Small Boat Operations:no SCUBA Diving Operations:no

Hazardous Material

Will hazardous material be utilized?yesDescribe deployment method and quantity:
Lithium batteries for gliders.   O2 Titrator and Salt chems.  Small nitrogen tank (Eric Benway will supply Hazmat inventory sheet).

Radioactive Material


Additional Information

Is night time work anticipated on this cruise?yesSpecialized tech support (Seabeam, coring, other):
Irminger Site survey work and possible CTD.  All mooring ops to be done in daylight.Other required equipment and special needs:

Checklist & Notes


U.S. Customs Form: no
Diplomatic Clearance: no
Date Submitted:
Date Approved:
Agent Information:
Isotope Use Approval: no
Isotope Notes:
SCUBA Diving: no


SSSG Tech:
Small boat needed only as backup for recovery of gliders.