L5 - ROV and AUV Flashcards
What is an UUV?
Unmanned Underwater Vehicle
What is an ROV?
Remotely Operated Vehicle
What is an AUV?
Autonomous Underwater Vehicle
Give 2 national marine facilities that used UUV/ROV/AUV?
- NOC (UK)
2. NOAA (USA)
What is the SUT?
Society of Underwater Technology
Give 5 points about the operation of ROVs?
- Tethered to the mothership
- All power/commands/controls from the mothership
- Limited cable length
- Limited by the ships winch capacity
- Carry a varied instrument payload
Give 5 points about the operation of AUVs?
- Deployed from the vessel with a pre-programmed mission
- Autonomous operation (has its own power/navigation system)
- Wide sensor load – flexible operations
- Able to survey in hostile environments
- Missions vary from coastal to under ice
Where has the most development been in AUVs?
In the last 10-15 years
In what year did the SLOCUM AUV survey the Sargasso Sea?
1995
What is ABE?
Autonomous Benthic Explorer
In what year did the AUV theseus work in the Canadian Arctic and how much cable was laid?
1996
175km
Give 3 AUV data outputs
- Bathymetric Imagery
- Temperature/Salinity/Density Profiles
- SSS Imagery
Give 5 points about Oceanographic Gliders
- They are a relatively new type of AUV
- Low cost, weight and power requirements
- Long range capability
- Gives basic data
- Missions vary from tropical to polar seas
Which marine facility ranges the Autosub AUV?
NOC
How many missions has the Autosub AUV completed?
271
What is the deepest that the Autosub AUV has gone to?
1003m
What was the longest (time and distance) mission the Autosub AUV completed?
50 Hours
262km
Give 5 sensors on the Autosub AUV
- Positioning (INS & DGPS)
- ADCP
- CTD Probe
- PH Probe
- Camera
Give 3 factors about the Autosub 6000 AUV?
- Able to survey to 6000m
- 5.5m long & 1500kg in weight
- Able to survey for 36 hours at 3 knots
Give 3 missions completed by the Autosub AUV
- Dissolved Oxygen Studies of a Sea Loch in Scotland
- Underwater Sea Ice Programme
- Scilly Straits
Give 5 advantages of AUVs
- Fine Scale Surveys
- Totally Remote Operation
- Hostile Environment Capability
- Less environmentally invasive than Vessels
- Cost Effective
Give 8 issues associated with AUVs
- Navigation Systems require Digital Nautical Charts
- Can be lost and therefore require backup systems
- Sensors may be crushed with pressure at depth
- Weight of batteries vs. mission times
- Law of the Sea
- Insurance
- Collision Avoidance Regulations
- Sample small areas in detail vs. large in area in less detail
Where have surface robotics been used to track fish within a Marine Protected Area?
South West England
Give 5 applications of ROVs/AUVS vehicles
- Oil & Gas Industry
- Data Sparse & Hostil Regions
- Geophysical Survey
- Storm Investigation
- Remote Marine Mammal Observations/Tracking
What recent announcement has the NOC made for using UUWs?
That UUWs are going to be used to help monitor carbon capture areas in the oceans