1. SeaCycler AST2 Surface Piercing Profiler Technology

2. NSF Development Development funded by NSF The Surface Piercing Profiler is Ultimately a Vendor Supplied System The SeaCycler is an exemplar for the Global OOI Surface Piercing Profiler

3. - Used on a sub-surface mooring. -Profiles (or moves) instruments from a 150m depth, to the surface and back collecting data - When at the surface, it floats a small satellite antenna to communicate data to shore and receive new commands - No surface expression, except when communicating - Conserves power to enable numerous long profiles - Designed for the open-ocean. 150m

4. Mechanism Float (underwater winch) Instrument Float - travels 150m to Surface 23m fixed cable length Communication Float - travels with the InstFloat Flotation Sphere Profiling Principle A small buoyancy moved a long distance is balanced by a large buoyancy moved a short distance in the opposite direction.

6. Antenna – Iridium, GPS, FreeWave Communication Float Weight = 40 lbs Net Buoyancy = 12 lbs Length = 60+ inches

7. Seabird MP-52 CTD with O2 AquaDopp Current Meter Benthos Acoustic Modem Instrument Float Weight = 510 lbs Net Buoy = 230 lbs Sensor Payload = 100 lbs Electronics Case

8. Instrument Float Tank Test

9. SeaBird MP-52 CTD with O2 NortekUSA Aquadopp HR Current Meter Benthos Acoustic Modem

10. Mechanism Float Weight = 4120 lbs Net Buoyancy = 950 lbs

11. SeaCycler Testing

12. Mechanism Float 29 54 70 ID Mechanism Float Flow Dynamics Fin Designed for Stabilization Fin orients mechanism float into currents

13. Motor Pendulum Ring Torus Pressure Case Lead Weight (150 lbs) Principle of Operation

14. GearMotor (pressure case removed) Bearings Lubricator Pendulum- Ring Lead Weight SeaCycler: TorusMotor Pinion Section View (both cases shown) Floating Base Plate

15. Motor is powerful enough to lift and flip the lead weight

16. SeaCycler Deployment History: 7 Deployments Since March 2010 - 3x, Bedford Basin (76m depth) - 2x, 32 km Offshore (155m depth) - 2x, 250 km Offshore (1120m depth)

17. Ongoing SeaCycler Deployment April 17, 2011 to present 1200m water depth

18. Mechanism Float Instrument Float Preparing for Deployment

19. SeaCycler350 Jan-09 Update ( Home stretch …..) Mechanism Float Instrument Float Ready for Deployment

20. Mechanism Float Deployment Starting

21. Deployment Using Canadian Coast Guard Vessel

22. Mechanism Float Mechanism Float Deployed

23. Mechanism Float Instrument Float Communications Float

25. The Instrument Float can be surfaced to adjust buoyancy and/or swap instruments at sea without recovering the mooring. Instrument Float Communications Float Instrument Float

27. Real-Time Temperature Data

28. Real-Time Salinity Data

29. Real-Time Oxygen Data

30. Real-Time CTD via Inductive Telemetry

31. Mechanism Float surfacing after mooring release (1.8 m/s at 70 degrees)

32. Mechanism Float Recovery

33. -Satellite communication for near real-time data and remote control operation -Inductive modem coupling to deeper-water instrumentation -Open-ocean design suitable for deep water (5000m) sites -Profiling -365 x 150m profiles are possible for year-long deployments -Profile stops for discreet sampling -Extra cable storage to compensate for mooring knockover -150m hide-depth for security and bio-fouling -Surface wave detection -Large instrument payload (100 lbs in air) -Simple straight-through cable routing – anchor to surface SeaCycler Capabilities