Cruise Planning Questionnaire

    Vehicle(s) required:
    Name of ship for ROV ops:
    Ch Sci:
Craig Cary
Univ. of Delaware
College of Marine studies
700 Pilottown Rd.
Lewes, DE 19958
    POC / contact info:
Departure port & date:5/8/99
    Distance to first station:
    Number of stations:
    Distance between stations:
    Total days on station:
Arrival port & date:6/6/99
Op area:NP13 - 9N EPR
Lat/Lon:9 50N, 104W
Depth range:2500
    Will the vessel be operating within 200 NM of a foreign country?
    Which country?
    Are visas or special travel documents required?

Funding agency:

Grant or contract number: OCE-9714302

    Science objectives/activities planned:
The Luther/Cary/Reysenbach LExEn program has 8 allocated Alvin dives on this cruise. We plan to integrate these 8 dives with the 4 dives awarded to the Cary /LARVE program. We feel that these independent research programs are directly complementary and will be well served by blending each of the dive goals. A cruise questionnaire has been sent for the LARVE portion here we will address only the LExEn component.

The primary objective of the LEXEN program will be to survey and sample specific diffuse flow habitats with a new microelectrode array and to collect sulfide samples from these sites for microbial characterization.

Microelectrode/SIPPER array.
The microelectrode/SIPPER array consists of two distinct operational units that are connected only through the terminal sampling wand. The SIPPER unit is a microwater sampler that requires a 50 v DC power source and RS232 communication. The unit has been deployed on 3 past cruises very successfully and is well known by the Alvin group. Attached to the SIPPER is a separate ICL thermocouple unit that requires ICL communication and 12 volt power. This unit was designed and built by Lane Abrams at WHOI. The SIPPER unit has the ability to take 12 independent water samples. This unit is positioned at the rear of the basket but in view of the pilot. The water samples are taken with continuous temperature measurements through 12 of tubing that terminates in a "T" handled wand unit. The thermocouple unit interfaces with the Wand and is cabled back to a small communication bottle positioned to the rear of the basket. We anticipate that this unit will go down on most dives.

The microelectrode device consists of 1 or 2 bottles cabled together and a 12 series of cables that terminate in the electrodes themselves. We will attempt to run the unit off Alvin power (the single bottle configuration) but in the event that there is too much noise we will power off batteries (two bottle configuration). The bottles will be positioned at the rear of the basket. The electrode cables will be combined into the SIPPER tubing sheath with the electrodes interfacing with the wand unit. The units are still in construction so we do not have weights yet we do anticipate a 90lbs out of water weight. We will need one "switched" 2 amp - 12 Volt line to run the potentiostat
directly from Alvin. If that does not work, we will still need a 12 V
line to power the on/off of our own power supply which will be in another
housing in the basket. Communication with the unit will be through an RS232 link.

Chimney sampling.
We have designed several new devices samples that we will be testing on this cruise to take discrete sulfide samples. Our general approach will be to use small shovel-like devices that have bags attached that will trap the samples. We will also try a simple coring device to see if this works better. This unit will probably work using sub hydraulics.

WHOI shipboard scientific instrumentation desired:
Fume Hood
Chest Freezer
-70 Deg Freezer

Is nighttime work anticipated on this cruise?

    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: 2-3 for Alvin Nav
Ultra-short baseline (USBL) navigation?
Doppler/GPS navigation?

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

Science Van #1
Science Van #2
Science Van #3

Anticipated standard oceanographic cable use:

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?

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

    Electrical power
    Equipment handling
    Inter/intraship communications
    Science stowage

If yes to any of the above, please identify: Possible need to communicate with French Research Vessel - Nautile operating at 13N EPR

Will any of the following items be used on board?

    Explosive devices
    Portable air compressors
    Flammable gases
    Isotope van

Will hazardous material be used aboard, or deployed by an ROV? Yes

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?

Vehicle equipment required:Check one or both:
Major water samplers
Large capacity slurp samplers
Small capacity slurp samplers
Bio collection boxes
Push corers
Scoop nets
High temperature probe
Low temperature probe
Heat flow probe
Portable CTD
Digital Still Camera
Search Sonar
Profiling Sonar
Rock Drill (Jason only)
Video Duplication (Jason)
    Other vehicle-related equipment (list):
    Science equipment to be installed on vehicle:
SIPPER - 16"dia x 23" high;41 lbs out of water, 21 in water;50volt from sub; RS232

ICL - 2.5" dia x 8" long; next to nothing; 12 volt power; ICL data logger input

Microelectrode - 6" dia x 24" (times 2); each bottle 90 lbs; one "switched" 2 amp - 12 Volt line to run the potentiostat
directly from Alvin. If that does not work, we will still need a 12 V
line to power the on/off of our own power supply which will be in another
housing in the basket. Communication with the unit will be through an RS232 link.
    Electronic equipment used in the ALVIN personnel sphere:
3 lab top computers that will be sent for testing very soon.

Palm top for SIPPER has been sniffed.
    Other comments and information:
This is being submitted for the Luther/Cary LExEn portion of the leg

Date Submitted: 03/18/99 05:14 PM