Cruise Planning Questionnaire


Ship: ATLANTIS
    Vehicle(s) required:
ALVIN
    Name of ship for ROV ops:
    Ch Sci:
Keir Becker
    Affiliation:
University of Miami - RSMAS
    Address:
4600 Rickenbacker Causeway
Miami FL 33149
    Phone:
1-305-421-4661
    Email:
kbecker@rsmas.miami.edu
    POC / contact info:
Departure port & date:Astoria, 16 Sept 2006
    Distance to first station:
1301A/B, ~ 200 miles
    Number of stations:
7 CORKs
    Distance between stations:
see below
    Total days on station:
4
Arrival port & date:Astoria, 21 Sept 2006
Op area:NE Pacific
Lat/Lon:see site table below
Depth range:2400-2700
    Will the vessel be operating within 200 NM of a foreign country?
    Which country?
    Are visas or special travel documents required?

Funding agency:
      NSF
Specify:

Grant or contract number: OCE-0400471

    Science objectives/activities planned:
Dive operations at any of 7 working ODP/IODP CORK sites in NE Pacific:

Hole 857D, Middle Valley, 4826.517’N, 12842.651’W, 2421 m
Hole 1024C, Cascadia Basin, 4754.531’N 12845.005’W, 2612 m
Hole 1025C, Cascadia Basin, 4753.247’N 12838.919’W, 2606 m
Hole 1026B, Cascadia Basin, 4745.759’N 12745.552’W, 2658 m
Hole 1027C, Cascadia Basin, 4745.387’N 12743.867’W, 2656 m
Hole 1301A, Cascadia Basin, 4745.209’N 12745.833’ W, 2658 m
Hole 1301B, Cascadia Basin, 4745.229’N 12745.826’W, 2658 m

Top priority: Remedial cementing inside the reentry cones at 1301A and 1301B. Tom Pettigrew of Stress Engineering is currently contracted by co-investigator G. Wheat of U. of Alaska to devise a cementing system and plan. Pettigrew/Wheat will submit that plan to the Alvin group for review this summer. It will likely include a system using weights and syntactic flotation to pre-deploy a 55-gallon drum of pre-mixed cement the morning of a dive, with Alvin to maneuver the system (near neutrally buoyant after release of drop weights) to the wellheads, deploy a hose from the drum into the reentry cone, and release the cement. If necessary, all four dives will be devoted to this objective.

Second priority, as time becomes available on any dive to 1301A/1301B: Data downloads using ODI Nautilus connectors at nearby Holes 1026B and 1027C, and potential fluid sampling from 1026B. Note that 1301A, 1301B, 1026B, and 1027C are all within a 3 km radius and can be covered by a single 2-transponder net.

Backup/third priority (i.e., if cementing needs less than 4 dives or is abandoned for technical reasons): Data download at 857D, 1024C, and 1025C, and recovery of seafloor instrumentation package ~100 m from 1024C using syntactic flotation. Potential exploration and sampling of vents nearby 857D.

WHOI shipboard scientific instrumentation desired:

Is nighttime work anticipated on this cruise? No

    Critical MET sensors:
    Critical CTD sensors:

Do you need Seabeam? (AT and KN only) No

Long baseline (LBL) transponder navigation? Yes No. of xpndrs/nets: 2/1 (see details above)
Ultra-short baseline (USBL) navigation? Yes
Doppler/GPS navigation? Yes

Will you be using portable science vans? No How many:


Science Van #1
Science Van #2
Science Van #3
    Type/size
    Location
    Water
    Power

Anticipated standard oceanographic cable use:

Instruments(s)
Instrument Weight(s)
Maximum Depth
    Conducting hydro
    Steel hydro
    Steel trawl
    .681" fiber optic
    Do you require slip rings?
NoNumber of conductors:
    Do you need non-standard wire?
NoIf so, what type?
    Do you need a traction winch?
No
Will you be bringing any equipment (winches, blocks, etc.) that lowers equipment over the side? No

If yes, please provide details:
Will there be special requirements for:

    Electrical power
No
    Equipment handling
Yes
    Inter/intraship communications
No
    Science stowage
No

If yes to any of the above, please identify: Preparation of cementing system described above, and deployment before dives

Will any of the following items be used on board?

    Explosive devices
No
    Portable air compressors
No
    Flammable gases
No
    Radioisotopes
No
    Isotope van
No

Will hazardous material be used aboard, or deployed by an ROV? No

What measures or plans have been made a) in the event of a spill, and b) for the removal and/or disposal of these materials at the completion of the cruise?