L5 - ROV and AUV

Question 1

What is an UUV?

Answer 1

Unmanned Underwater Vehicle

Question 2

What is an ROV?

Answer 2

Remotely Operated Vehicle

Question 3

What is an AUV?

Answer 3

Autonomous Underwater Vehicle

Question 4

Give 2 national marine facilities that used UUV/ROV/AUV?

Answer 4

1. NOC (UK)

2. NOAA (USA)

Question 5

What is the SUT?

Answer 5

Society of Underwater Technology

Question 6

Give 5 points about the operation of ROVs?

Answer 6

1. Tethered to the mothership
2. All power/commands/controls from the mothership
3. Limited cable length
4. Limited by the ships winch capacity
5. Carry a varied instrument payload

Question 7

Give 5 points about the operation of AUVs?

Answer 7

1. Deployed from the vessel with a pre-programmed mission
2. Autonomous operation (has its own power/navigation system)
3. Wide sensor load – flexible operations
4. Able to survey in hostile environments
5. Missions vary from coastal to under ice

Question 8

Where has the most development been in AUVs?

Answer 8

In the last 10-15 years

Question 9

In what year did the SLOCUM AUV survey the Sargasso Sea?

Answer 9

1995

Question 10

What is ABE?

Answer 10

Autonomous Benthic Explorer

Question 11

In what year did the AUV theseus work in the Canadian Arctic and how much cable was laid?

Answer 11

1996

175km

Question 12

Give 3 AUV data outputs

Answer 12

1. Bathymetric Imagery
2. Temperature/Salinity/Density Profiles
3. SSS Imagery

Question 13

Give 5 points about Oceanographic Gliders

Answer 13

1. They are a relatively new type of AUV
2. Low cost, weight and power requirements
3. Long range capability
4. Gives basic data
5. Missions vary from tropical to polar seas

Question 14

Which marine facility ranges the Autosub AUV?

Answer 14

NOC

Question 15

How many missions has the Autosub AUV completed?

Answer 15

271

Question 16

What is the deepest that the Autosub AUV has gone to?

Answer 16

1003m

Question 17

What was the longest (time and distance) mission the Autosub AUV completed?

Answer 17

50 Hours

262km

Question 18

Give 5 sensors on the Autosub AUV

Answer 18

1. Positioning (INS & DGPS)
2. ADCP
3. CTD Probe
4. PH Probe
5. Camera

Question 19

Give 3 factors about the Autosub 6000 AUV?

Answer 19

1. Able to survey to 6000m
2. 5.5m long & 1500kg in weight
3. Able to survey for 36 hours at 3 knots

Question 20

Give 3 missions completed by the Autosub AUV

Answer 20

1. Dissolved Oxygen Studies of a Sea Loch in Scotland
2. Underwater Sea Ice Programme
3. Scilly Straits

Question 21

Give 5 advantages of AUVs

Answer 21

1. Fine Scale Surveys
2. Totally Remote Operation
3. Hostile Environment Capability
4. Less environmentally invasive than Vessels
5. Cost Effective

Question 22

Give 8 issues associated with AUVs

Answer 22

1. Navigation Systems require Digital Nautical Charts
2. Can be lost and therefore require backup systems
3. Sensors may be crushed with pressure at depth
4. Weight of batteries vs. mission times
5. Law of the Sea
6. Insurance
7. Collision Avoidance Regulations
8. Sample small areas in detail vs. large in area in less detail

Question 23

Where have surface robotics been used to track fish within a Marine Protected Area?

Answer 23

South West England

Question 24

Give 5 applications of ROVs/AUVS vehicles

Answer 24

1. Oil & Gas Industry
2. Data Sparse & Hostil Regions
3. Geophysical Survey
4. Storm Investigation
5. Remote Marine Mammal Observations/Tracking

Question 25

What recent announcement has the NOC made for using UUWs?

Answer 25

That UUWs are going to be used to help monitor carbon capture areas in the oceans