IRVSI Header Logo

Vessel Data and Contact Information for the
Blue Heron

Last Updated - 1/26/2005
Main Activities
Capacities & Workspaces
Range, Speed, Endurance
DP Equipment
CTD Specs
Coring Specs
Underwater Vehicles
Diving Capabilities
Engineering Design
Navigation & Communications
Acoustics & Profiling
Winches, Gantries & Cranes
Country: USA

NODC Code:

    Call Sign: WCX7521
Owner: University of Minnesota, Duluth
Operator: Large Lakes Observatory
Contact: Doug Ricketts
Address: University of Minnesota, Duluth (LLO)
10 University Drive
Duluth, MN 55812
Telephone: (218) 726-7826
Fax: (218) 726-6979
Year Built: 1985
Ship URL: Link to Ship Home Page

Ship Schedule URL:

Ship Schedule via its Home Page

Back to Top

Main Dimensions

  Length OA: 26.2  m
  Breadth: 7  m
  Freeboard to working deck: Unknown
  Max. draft: 3.35  m

Back to Top

Main Vessel Activity

  Main Activity:
  Operating Area: Great Lakes: Lake Superior
  Navy Grids Supported: GL4

Back to Top

Capacities and Working Spaces

  Gross tonnage: Unknown
  Dry cargo holds: Unknown
  Fuel: 30.28  m3
  Wet Labs Area: 22.3  m2
  Dry Lab Area: 53  m2
  Fresh Water
 Storage Capacity:
9  m3
  Fresh Water Generator Capacity: Unknown
  Scientific Clean Water Generation: Unknown
  Free Working Deck Area: 74  m2
  Space for container lab: Unknown
  Radioactive Isotope Work Areas: Unknown

Back to Top

Range, Speed and Endurance

  Range: 3000  nautical miles
  Cruising Speed: 9  kts.
  Max. Speed: 10  kts.
  Endurance: 14  days

Back to Top


  Officers: Unknown
  Other crew: 4
  Scientists: 5
  Air Conditioned: Unknown

Back to Top

Data Processing Equipment:

  Computers: Unknown
  Printing/Plotting: Unknown

Back to Top

CTD Specifications:

  CTD Aboard: SeaBird 911-plus CTD and rosette sampler
  CTD Type: Unknown
  CTD Tow able: Triaxus Towed Vegicle with 911+CTD
  CTD Oxygen Sensing: Unknown
  CTD Transmissivity: Unknown
  CTD Fluormeter: Unknown
  CTD Rosette: Unknown

Back to Top

Coring Specifications:

  Coring Capabilities Aboard: Unknown
  Grab Sampler: Unknown
  Box Corer: Unknown
  Gravity Corer: Benthoes Gravity corer
  Piston Corer: Piston Corer
  Multi Corer: Ocean Instrucments Mulit-Corer

Back to Top

Underwater Vehicle Capabilities:

  Underwater Vehicle Support: Unknown
  ROVs: Unknown
  AUVs: Unknown
  Submersibles: Unknown

Back to Top

Diving Support:

  Diving Capabilities: Unknown

Back to Top

Engineering Design Particulars


Ice Breaking Ability:


Hull Materials:

  Dynamic Positioning Ability: Unknown
  Engines: Main engine(s): number:  1   make:  Diesel
Power (BHP) each engine:  Unknown

Propeller Diameter:  Unknown
  m Max. RPM:   Unknown
Total power auxiliary diesels:  Unknown
  Electrical Systems:  


 Voltages: 110/208/480V
     kVA: 65
    Phases: 1/3


60  Hz

Stabilized System:  Unknown  VAC  Unknown  AMPs   Unknown  Hz



  Unknown   Volts with  Unknown  Volts Max


Fixed Equipment

Back to Top

Navigation and Communication:

  Navigational Equipment: Radar, LORAN, Autopilot, Magnetic compass
  Communications Equipment: Radio, cell phone and intercom
  Satellite Communications Equipment: Unknown
  GPS: Two Northstar 941X Differential GPS

Back to Top

Acoustics and Profiling:

  Echosounders: Knudsen 320/R
  Sonar Type: 60'Stauffer midwater Trawl with a trawl Sonar System
  Sea Surface Mapping System: Unknown
  Side Scanning: ORE Model 168 analog side scan sonar system
  Multibeam: Reson SeaBat Model 8101 @ 240 kHz w/ 150deg swath
  Acoustic Doppler Current Profiler: RDI 150 kHz
  Silent Ship Operations: Unknown

Back to Top


  Winches: Unknown  
    Steel Wire Length: Unknown  safe working load:  Unknown
    Conducting Cable Length:  Unknown , safe working load:  Unknown
    Trawl winch length:  Unknown , safe working load:  Unknown
    Other Winches:
      Length:  Unknown , safe working load:  Unknown
  Gantry: Position: Unknown

Clearance above deck:  Unknown , and outboard extension:  Unknown


Safe working load at maximum reach:  Unknown

  Crane: Position: Unknown

Clearance above deck:  Unknown  and outboard extension:  Unknown


Safe working load at maximum reach:  Unknown

  Other:   (2) SeaMac Trawl Which, Hydrographic Which, Electromechanical Winch

Back to Top

Vessel Construction and Maintenance Supervision

  Construction Supervised by: Unknown
  Classification Society: Unknown
  Others, Specify: Unknown
OCEANIC - Ships Schedules & Information Pages
University of Delaware, College of Earth, Ocean, and Environment
Lewes, Delaware  19958
Phone:  (302) 645-4225