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RANGER Missions



  • Use flight data to determine the search zone for the wreckage
  • Identify the aircraft using the tail section
  • Remove debris from the engine using a lift bag*

· Attach the lift bag to the debris
· Inflate lift bag to raise debris
· Move the debris from the wreck area
· Release the lift bag from the debris

  • Return the engine to surface using a lift bag*

· Attach the lift bag to the engine
· Inflate the lift bag
· Return the engine to surface, side of pool

  • Return all lift bags to the surface side of the pool 

*Teams must provide their own lift bags.


  • Prior to the competition, build an ocean bottom seismometer (OBS), cable with connector, anchor, and release mechanism as per the specifications outlined in the competition manual. The OBS, connector, anchor, and release will be deployed on the bottom by divers before the mission run.

During the competition…

  • Disconnect the OBS cable connector from the power and communications hub
  • Place the cable connector in its holder
  • Close the door of the power and communications hub
  • Release the OBS from the anchor using one of the following:

· A manual release
· A magnetic/reed switch release
· WiFi or Bluetooth release
· Frequency-selective acoustic release

  • Return the OBS to the side of the pool 

Note: Additional WiFi protocol information will be included in the competition manual.


  • Use tidal data and nautical chart to determine the optimum region for a tidal turbine
  • Use tidal current data to calculate the maximum possible megawatt generation at this location
  • Install a tidal turbine in the optimum location

· Install the base on the bottom
· Install the turbine onto the base
· Latch the turbine in place

  • Install an Intelligent Adaptable Monitoring Package (I-AMP) to monitor area

· Transport the I-AMP to its stand
· Lock the I-AMP onto the stand 

  • Place a mooring a given distance from the base of the tidal turbine

· Measure the given distance from the base 
· Place the mooring on the bottom 

  • Suspend an Acoustic Doppler Velocimeter (ADV) at a given height on the mooring line

· Measure the given distance above the bottom
· Attach the velocimeter to the mooring line

  • Eelgrass habitat monitoring and restoration

· Collect two samples of eelgrass for topside analysis
· Transplant two eelgrass frames to a previously disturbed area


What follows is a summary of the electrical and fluid power requirements for the RANGER class.  The complete design and building specifications will be included within the competition manual.

NOTE:  Watch for new safety requirements and additional, detailed electrical specifications within the competition manuals.

  • 12 volts, 25 amps DC. Conversion to lower voltages is permitted topside and on the ROV. 
  • Pneumatics and hydraulics are permitted provided that the team passes the MATE Fluid Power Safety Quiz and follows the specifications included within the competition manual.
  • Lasers are permitted provided that the team follows the specifications included within the competition manual. 
  • Camera is required.
  • Depth requirement at the international competition: 3 meters.
  • Maximum size: 85 cm. Vehicles above this size will not be allowed to compete in the product demonstration. See below for additional details on size and weight requirements.
  • Maximum weight: 25 kg. See below for additional details on weight requirements.


The Applied Physics Laboratory at the University of Washington has included an ROV size and weight requirement in the request for proposals (RFP). Smaller, lighter vehicles will be given special consideration and vehicles above a certain size and weight will not be considered.. 

All size and weight measurements will include the vehicle, all tools and components, and the tether. The topside control system and 1 meter of tether going into the control system will NOT be included in the length or weight measurement. To receive points for smaller sized vehicles, the two largest dimensions of the vehicle and tether must fit through a round hole of the following dimensions:

< 60 cm diameter +20 < 12kg +20
60.01cm to 75cm +10 12.01kg to 17kg +10
75.01cm to 85cm +5 17.01kg to 25kg +5






Vehicles above 85 cm in diameter, or greater than 25 kg in weight, will not be allowed to compete in the product demonstration.

NOTE: In addition to the size and/or weight limitations described above, companies must be able to personally transport the vehicle and associated equipment to the product demonstration station and to the technical sales presentation room. The ROV systems must be capable of being safely hand launched.


Teams are permitted to use the materials of their choice provided that they are safe, will not damage or otherwise mar the competition environment, and are within the defined design and building specifications.

Teams are encouraged to focus on engineering a vehicle to complete the product demonstration tasks; when considering design choices, teams should ask themselves which one most efficiently and effectively allows them to solve the problem. Re-using components built by previous team members is permitted provided that the current team members evaluate, understand, and can explain their engineering and operational principles. Using or re-using commercial components is also permitted, provided that team members evaluate, understand, and can explain their engineering and operational principles. Teams will be questioned extensively on their overall design and component selections during their technical sales presentations.

The complete competition manual will be released by November 15, 2017; teams have from that date until the regional events in the spring of 2018 to construct their vehicles and prepare the engineering and communication components (technical reports, engineering presentations, and poster displays).  Visit the MATE website at or request to be added to the MATE competition listserve to ensure a timely delivery.