Location: Barkley Canyon Date: September 9, 2013 Constraints: none

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1 Page 1 of 11 DIVE PLAN R1650 Location: Barkley Canyon Date: September 9, 2013 Constraints: none Objectives Deploy POD 1 autonomous CTD Survey POD 3 for sediment enrichment sites; deposit cages; collect push cores Deploy Kongsberg sonar Collect Coral Cliffs ADCPs Opportunistic organism sampling Dive Dependents 1. Kongsberg Sonar is ready for deployment, with head angle set to 0 degrees. 2. POD 1 CTD is configured for deployment with comms connector tied off. 3. Sonar Tripod is deployed at the Hydrates site (completed May 2013). Ship Procedure 1. Transit to site, assess weather and sea state. Proceed only when Master and ROV Supervisor agree it is safe to do so. ACTION LATITUDE (DD) LONGITUDE (DD) LATITUDE (DDM) LONGITUDE (DDM) DEPTH (m) Descent at Barkley Canyon POD 1 IP N W 985 Barkley Hydrates IP N W 871 Communications with shore 1. On-board team will tweet using twitter account at the beginning of the dive. 2. Post the dive plan on the cruise website 3. On-board team will use Skype during operations as required 4. Communications with shore The ship will call shore operations at (250) ~30min before shore operations are due to initiate unless connection is confirmed through Skype If shore operations needed during the: a. Day: send an 2h before the dive to nv-ops@uvic.ca and contact on Skype ½ hour before b. Night or early in the morning: send ½ hour before operation (when ROPOS on bottom) to neptunecanadaoperations+cruise@gmail.com Loggers 1. Start CTD recording at beginning of dive 2. Record positions of all samples. 3. Ensure that KiPro recorders are recording MiniZeus stream (Marine Tech) 4. Ask pilot to start McLane sampler and practice using interface (no purpose for sample other than practice) Navigation 1. Record positions of deployed platforms and satellite instruments 2. Guide surveys 3. Record interesting positions

2 Page 2 of 11 CanyonAxis_ADCP_ N W 986 CanyonAxis_Camera_ N W 986 CanyonAxis_IP_Pod1_ N W 985 CanyonMidEast_ADCP_ N W 889 CanyonMidEast_Camera_ N W 890 CanyonMidEast_IP_Pod3_ N W 888 CanyonMidEast_SedTrap_ N W 890 CanyonMidWest_IP_Pod4_ N W 895 CoralCliff1_AutonomousAQDProfiler_ N W 826 CoralCliff2_AutonomousAQDProfiler_ N W 811 Hydrate_IP_ N W 871 Hydrate_KongsbergSonar1_ N W 865 Hydrate_KongsbergSonar2_ N W 867 Hydrate_Wally-IP_ N W 860 WW 1_ N W 866 WW 10_ N W 866 WW 11_ N W 865 WW 12_ N W 866 WW 13_ N W 865 WW 14_ N W 862 WW 15_ N W 870 WW 16_ N W 862 WW 17_ N W 860 WW 18_ N W 860 WW 19_ N W 858 WW 2_ N W 866 WW 20_ N W 860 WW 3_ N W 865 WW 4_ N W 867 WW 5_ N W 867 WW 6_ N W 866 WW 7_ N W 866 WW 9_ N W 867 Shell Experiment #1 (near WW_9) N W 868 Shell Experiment #2 (near WW_16) N W 861 Dive Chief 1. Record deviations from dive plan

3 Page 3 of Record changes to site layout diagrams Site/Equipment Ids ACTION SITENAME DEVICE ID DEVICENAME LATITUDE LONGITUDE DEP TH Clean Hydrate_Wally-IP_ Crawler IA (switch) J7 Recover Recover CoralCliff2_AutonomousAQDProfiler_ CoralCliff1_AutonomousAQDProfiler_ Place and connect Hydrate_KongsbergSonar2_ Deploy CanyonAxis_IP_Pod1_ PORT Nortek Aquadopp Profiler AQD N/A Nortek Aquadopp Profiler AQD N/A Kongsberg Mesotech Rotary Sonar 1171 ( ) J4 Sea-Bird SeaCAT SBE16plus V N/A ROV / Equipment Requirements: 1. Crate or bootbox (for recovering dust cap, parking position, and pull pins) cages and rope for 2 m spacing 3. Push cores 4. Suction sampler rigged as water jet for Wally cleaning 5. Toilet brush for Wally cleaning 6. McLane pumps for test; rigged with mesh in filter holder 7. Carabiners for ADCP identification 8. Porch rigged to recover two autonomous ADCPs (see figure later) 9. Kongberg Sonar 10. Autonomous CTD ROV Procedure CTD Deploy autonomous CTD at POD 1 1. Locate the POD 1 platform 2. Hang the CTD on the horn of the platform 3. Record a position (lat/long/depth) and heading for the platform. Heading should be recorded with ROPOS aligned above the platform, with the connector panel below ROPOS stern. Sediment enrichment experiment Survey for deployment site of enrichment experiment and deploy cages at POD 3 4. Transit to POD 3 platform site. 5. Record a position (lat/long/depth) and heading for the platform. Heading should be recorded with ROPOS aligned above the platform, with the connector panel below ROPOS stern. 6. Locate the POD 3 camera. Record a position (lat/long/depth) for the camera. 7. Pick the ruler up and replace it as near to the current position as possible but on top of the sediment. 8. Conduct a visual survey around the camera, taking DSCs and video of the sediment.

4 Page 4 of Temporarily deposit the frames outside the experiment area and camera field of view as instructed by the dive chief. 10. Take 10 push cores as directed by dive chief. Note the pushcores in the log and on the platform layout diagram below. 11. Using the layout diagram, determine sites for 18 cages. Hook the measuring rope on each leg in turn to determine the spacing of the cages. 12. For each cage site: a. Take DSC images of the sediment. b. Place the frame on the sediment, and press down until the plastic part is 10 cm off the ground. c. Take video of the site s position relative to the POD 3 camera. 13. When complete, contact ONC systems to active 4 hour camera schedule.

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6 Page 6 of 11 Kongsberg sonar deployment Locate/inspect deployed Kongsberg sonar tripod 14. Transit to Barkley Hydrates 15. Locate deployed Kongsberg sonar tripod (Landing zone identified in OE0054: LAT: N, LONG: W, DEPTH: 867 m) 16. Ensure all components are still in place. 17. Record position of tripod (lat/long/depth). Place Kongsberg Sonar (DeviceID:) Tripod #2 18. Inspect proposed location Sonar_2 near Waypoint Marker #20; needs to be northeast of Marker #20 on flat seafloor, not on a hydrate mound. 19. Record distance to instrument platform by flying back to instrument platform; ensure that 70 m cable would reach proposed Sonar_2 location. 20. If Sonar_2 location is not suitable, inspect alternative location Sonar_2_alt, 40 m south of instrument platform; also needs to be flat and off a hydrate mound; also ensure that 70 m cable could reach instrument platform if laid around the western side of the Wallyland Markers # 1, 2 and Pick up sonar tripod including a set of weights on each leg (tripod plus weight total 180 lbs). 22. If Sonar_2 waypoint was NOT suitable, the head on the sonar needs to be re-adjusted. Sonar must be recovered and deployed on the next dive. 23. If Sonar_2 waypoint was suitable: a. Re-locate the deployed Kongsberg tripod. b. Transit about 60 m ESE of the instrument platform. c. Place the tripod as directed by Dive Chief. d. Ensure that each set of weights has one 25-lb weight on each side of each leg. e. Level the tripod f. Record position (lat/long/depth) of tripod. g. Return to platform to collect sonar-end connector running from J4. h. Remove any excess cable from the horns. i. Pick up the connector and free the cable from the horns. j. Return to the tripod ensuring that the cable does not traverse through Wallyland. k. Place the connector plate into the slot (at bottom of tripod). l. Confirm with Bridge to release float. m. Release attached float for recover at surface by ship s crew. n. Reconfirm that the tripod is stable. Install the Kongsberg Sonar (IF at the Sonar_2 waypoint) o. Retrieve the Kongsberg sonar (DeviceID: 23108) p. Navigate back to the tripod. q. Position the sonar at the top of the tripod. r. Connect its 3m cable to the 70m cable. s. Confirm power and communications (J4). t. Recover the level secured by pullpin to the grating u. Record Position (lat/long/depth) and Heading of the Sonar with the red handle on sonar mount aligned with ROPOS stern.

7 Sonar Tripod 1, which is similar to Sonar Tripod 2 being positioned on this dive. Ocean Networks Canada Page 7 of 11

8 Page 8 of 11 Proposed sites for Kongsberg sonar tripods, with alternate position for 2 nd tripod depending on ground condition cable routing. The star denotes the Barkley Hydrates IP, and yellow circles represent Wallyland markers. Clean Wally the Crawler 1. Starting with the rear sensors, and ending with the most sensitive methane sensors, clean Wally s sensors according to the following instructions (see pictures): Rear: a. Rear camera and lights: Use brushes to clean glass surfaces b. Rear ADCP: Use suction pump to expel clean water out its exhaust and hold close ( inches) to top of rear ADCP; try free the top from any sediment. c. Rear ADCP: clean transducers with brush Front: a. Stop ROPOS in front of Wally and wait until dust settles. b. Front camera: Use brushes to clean glass surfaces of front camera, front lights and laser - avoid touching surrounding sensors.

9 Page 9 of 11 c. Turbidity Meter: Use suction pump to expel clean water out its exhaust and hold close ( inches) d. Turbidity Meter: clean with brush e. Methane sensors: clean each with waterjet. Clean sensor would have a white membrane. Legend: - Blue: Clean with water stream - Red: Careful brushing - White: No cleaning required

10 Page 10 of 11 Recover Coral Cliffs ADCPs 24. Transit to the location of the first ADCP CoralCliff1_AutonomousAQDProfiler_ N W Take DSCs and video around the ADCP, imaging the instrument and the surrounding coral 26. Record the position (lat/long/depth) and heading of the instrument. For the heading, align ROPOS with to instrument with head of the instrument at the front of ROPOS. 27. Clip the ADCP identification carabiner on the handle of the instrument. 28. Secure the ADCP to the porch. 29. Transit to the location of the second ADCP and repeat steps CoralCliff2_AutonomousAQDProfiler_ N W 811

11 Page 11 of 11 Autonomous ADCP Optional Sampling 30. Consult Dive Chief for optional sampling, time permitting (see optional sampling document). Recovery 31. Recover ROV to surface with 2 ADCPs.