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, Sept 13, 2007
    Distance to first station:
1301A/B, ~ 200 miles
    Number of stations:
7 CORKs (plus Di Iorio mooring site)
    Distance between stations:
see site table below
    Total days on station:
12 (Becker), 3 (Di Iorio)
Arrival port & date:Astoria, Sept 30 2007
Op area:NE Pacific
Lat/Lon:see site table below
Depth range:2400-2700 m
    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:
Servicing operations at 7 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

Most of the 12 Becker dives will be in the 1026B/1027C/1301A/B area, which can be covered with a single 2-transponder net. The other three sites each would require just one dive each, primarily for data downloads as in many past Alvin operations.

At the 1026B/1027C/1301A/B area, operations will include the following:
1. Delivery of cement into the 1301A/B wellheads. This will be similar to the efforts on two Alvin dives in Sept 2006 (AT15-10), except that we will probably use expendable cementers that do not require complex rigging for recovery.
2. Exchange of data loggers and wellhead osmosampler units at the 4 wellheads, similar to Alvin operations in 2005 (AT11-32).
3. Data downloads using underwater-mateable connectors as in the 2005 program.
4. A likely attempt to recover the sensor string from 1026B (about 500 lbs total weight). This would utilize Alvin to mate up a latching tool on a spectra line to the surface, then (after Alvin recovery) a science-provided winch to pull the sensor string out of the hole to the ship. Alvin would also be required to install a plug in the hole (~50-100 lbs) on a subsequent dive.

WHOI shipboard scientific instrumentation desired:
Fume hood
    Relay transponder for wire use
Refrigerator
Deionized water system
-70 deg freezer

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?
Number of conductors:
    Do you need non-standard wire?
If so, what type?
    Do you need a traction winch?
Will you be bringing any equipment (winches, blocks, etc.) that lowers equipment over the side? Yes

If yes, please provide details: H. Jannasch to provide rope and suitable winch for planned instrument recovery at 1026B. He has been in direct contact with E. Caporelli about details.
Will there be special requirements for:

    Electrical power
Yes
    Equipment handling
Yes
    Inter/intraship communications
    Science stowage

If yes to any of the above, please identify: Electrical power for cement mixer and Jannasch winch.

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?