Woods Hole Oceanographic Institution

Cruise Planning Synopsis

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AR42: McRaven/Stolp


RV Neil Armstrong

Cruise Party

Mathieu Dever: Principal Investigator
Woods Hole Oceanographic Institution Clark 224, MS#29 Woods Hole, Ma. USA 02543
+1 508 289 3984

Leah McRaven: Chief Scientist
Woods Hole Oceanographic Institution Clark 355A, MS#21 Woods Hole, Ma. USA 02543
+1 508 289 2804

Laura Stolp: Principal Investigator
Woods Hole Oceanographic Institution Smith 301, MS#17 Woods Hole, Ma. USA 02543
+1 508 289 3031

Departure: Nov 17, 2019

Woods Hole

Arrival: Nov 22, 2019

Woods Hole

Operations Area

Shelf break
Lat/Lon: 39° 44.0′ N / 67° 0.0′ W
Depth Range: 20 / 3200
Will the vessel be operating within 200 NM of a foreign country? n/a
Are visas or special travel documents required? no

Science Objectives

Science objectives are to 1) perform CTDs to assess salinity calibration methods and validate stand-alone salinity sensors, 2) deploy/recover an X-Spar buoy, 3) perform underway testing of the EcoCTD, 4) perform a bathymetric survey for Multibeam calibration, 5) assess performance of the Armstrong Active Heave compensation system.

Science Activities

See above. Preliminary cruise waypoints and map are uploaded in the attachments. In addition, schematics and photos of the X-Spar and EcoCTD have been uploaded.

Additional Info

Pre-cruise Planning Meeting: Visit WHOI
Media personnel on board: Video, Writer
We were informed that WHOI outreach is interested in sending 1-2 people


Supporting documentation:



Funding Agency: NSF
Grant or contract number:

Scientific Instrumentation for R/V Armstrong

Shipboard Equipment

Bathymetry System 12 kHz
ADCP 300 kHz
Sippican XBT System (Mark 21)
ADCP 150 kHz
Deionized Water System
Science Underway Seawater System
EM122 (12 kHz) Multibeam Echosounder
Dynamic Positioning System
ADCP 38 kHz
EM710 MkII (40 to 100 kHz) Multibeam Echosounder
Shipboard Equipment Notes: The PIs of this project kindly ask for use of the following equipment: 1) two CTD/rosettes and two fishes with sufficient backup parts (at least one set with recent SBE sensor calibrations), 2) two salinometers with salt sample bottles, 3) ability to utilize the Armstrong Active Heave Compensation on the main CTD arm, 4) use of the crane or A-frame for deployment/recovery of a 14 ft long drifting buoy, 5) deck space for storage of buoy, 6) deck space and power for a small winch on the fantail, 7) use of the Multibeam and other underway bathymetric systems.

Shipboard Communication

Basic Internet access via HiSeasNet
Shipboard Communication Notes: During the X-SPAR deployment, the X-SPAR location will be made available via satellite iridium communication through a web portal. Standard shipboard internet will be necessary for this. A line of site beacon will also be installed on the X-SPAR.

CTD/Water Sampling

Wet Labs C*Star transmissometer (660nm wavelength)
SBE43 oxygen sensor
911+ Rosette 24-position, 10-liter bottle Rosette with dual T/C sensors
Wet Labs FLNTURTD Combination Flourometer and Turbidity Sensor

Critical CTD Sensors

We would like to have two recently calibrated fish from SBE

Hydrographic Analysis Equipment

Salt Bottles (2 cases of 125 ml provided)

MET Sensors

Barometric Pressure
Air temperature
Relative Humidity
Wind speed and direction
Short Wave Solar Radiation
Long Wave Solar Radiation
Storage Notes:


Will you be using Long Base Line (LBL) navigation? no
How many nets? null
How many tansponders? null
Will you be using Ultra-short baseline (USBL) navigation?no


Navigation Notes:


Other Portable Winch
Winch Notes: A small Teledyne winch system will be provided by the science party. We would like a 4'x4' space to secure it to a location on the fantail of the deck. Standard 120 V power source needed.

In addition, while using the Active Heave Compensation system, we would like to log the winch MRU data. We would also like to consider the installation of a load cell on the CTD termination in order to record wire tension.

Wire use and application

CTD Winch with .322" Electro-mechanical wire
Winch Notes: We would like to utilize the Armstrong Active Heave Compensation on the main CTD arm, which includes the .322 wire.

Standard Oceanographic Cables

Slip ring required? no
Non-standard wire required? no
Traction winch required? no

Specialized Deck Equipment

Mooring Deployment/Recovery Equipment Required: no Type: 
Cruise Specific Science Winch Required: no Type: 
Nets Required: no Type: 

Over the Side Equipment

Will you be bringing any equipment (winches, blocks, etc.) that lowers instruments over the side? yes
Details: Yes, we will be towing the EcoCTD off the aft end of the ship with a small Teledyne winch (the same winch that is used for uCTDs).

We will also deploy and recover the X-SPAR buoy, which is approx 59 ft long. Drawing and photos provided.

Special Requirements

Elecrical Power: yes Identify 120 V hookup on fantail for Teledyne winch
Equipment Handling: no Identify: 
Inter/intraship Communications: yes Identify: radio coms for deck work
Science Stowage: yes Identify: X-SPAR buoy stowage on back deck
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?no
Describe deployment method and quantity:

Radioactive Material


Additional Information

Is night time work anticipated on this cruise?yes
Specialized tech support (Seabeam, coring, other):
Our group plans to operate on a 24hr clock during transits and station work.
Other required equipment and special needs:
utilize the Armstrong Active Heave Compensation on the main CTD arm

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: