Cruise Planning Questionnaire

    Vehicle(s) required:
    Name of ship for ROV ops:
    Ch Sci:
Eric Grabowski
Department of Oceanography, University of Hawaii
Eric Grabowski
University of Hawaii Manoa
1000 Pope Road
Honolulu, HI
    POC / contact info:
Departure port & date:Port of Honolulu-April 27th
    Distance to first station:
    Number of stations:
    Distance between stations:
    Total days on station:
Arrival port & date:Port of Honolulu-May 1st
Op area:Station ALOHA, a circle with a 6 nautical mile radius centered at 22 45'N, 158W
Lat/Lon:centered at 22 45'N, 158W
Depth range:4800m
    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: Karl, D/HOTS/OCE-0326616

    Science objectives/activities planned:

The objective of a HOT cruise is to maintain a collection of hydrographic and biogeochemical data at the Hawaii Ocean Time-series (HOT) stations. Four stations are to be occupied during the cruise, in the following order:

1) Station 1, referred to as Station Kahe, is located at 21 20.6'N, 158 16.4'W and will be occupied on the first day of the cruise for about 2 hours.
2) Station 2, referred to as Station ALOHA is defined as a circle with a 6 nautical mile radius centered at 22 45'N, 158W. This is the main HOT station and will be occupied during the 2nd, 3rd, and 4th days of the cruise.
3) Station 50, is the site of the WHOTS Mooring, located at 22 46'N, 157 53.83'W will be occupied on the 4th day of the cruise for about one hour.
4) Station 6, referred to as Station Kaena, is located off Kaena Point at 21 50.8'N, 158 21.8'W will be occupied on the 4th day of the cruise for about 2 hours.

Upon arrival to Station Kahe a 1,300 lb. weight-test cast to 500 m, one CTD cast to 1000 m, and a PRR cast will be conducted at this location. The single CTD cast is to be conducted for collection of continuous profiles of various physical and chemical parameters. Water samples are to be collected at discrete depths for biogeochemical measurements. After these operations are satisfactorily completed, the ship will proceed to Station ALOHA.

Upon arrival at Station ALOHA, a free-drifting sediment trap array is to be deployed. The sediment trap array will stay in the water for about 52 hours. This will be followed by one shallow CTD cast to 200 m and one 1000 m CTD cast to collect water for the primary productivity array. After this, the free-drifting primary productivity array will be deployed for 12 hours. A full-depth CTD cast will then be conducted after the deployment of the primary prodcution array, followed by 1000-m CTD casts at strict 3 hour intervals for at least 36 hours for continuous and discrete data collection, ending with another full-depth CTD cast.

Another free-drifting array (gas array) will be deployed during the cruise for 24 hours for incubation experiments.

A plankton net will be towed near noon and midnight for 30-min intervals. There will be 8 tows scheduled but only six need to be completed. Will use the capstan.

A Profiling Reflectance Radiometer (PRR) will be deployed twice at ALOHA for half-hour periods near noon time.

A package including a Wet Labs AC9, a Chelsea Fast Repetition Rate Fluorometer (FRRf), and a SeaBird Seacat will to be used to profile the upper 200 m at Station ALOHA around noon time twice and in the early morning once. Will use the capstan.

After CTD work at Station ALOHA is accomplished, the ship will transit to recover the floating sediment trap array and the gas array on the last day of work at ALOHA.

After recovering the arrays, the ship will then transit to Station 50 to conduct a one-hour 200-m CTD yo-yo cast.

Following the yo-yo CTD cast, light casts (PRR and AC9/FRRf) will be completed at Station ALOHA.

After operations at Station ALOHA are complete, the ship will transit to Station Kaena.

A near-bottom CTD cast (~2500 m) is to be conducted at Station 6 including salinity and chlorophyll samples for calibration, after which the ship will transit to Snug Harbor.

The following instruments are to collect data throughout the cruise: shipboard ADCP, thermosalinograph, underway fluorometer, anemometers, and the pCO2 system.

WHOI shipboard scientific instrumentation desired:
ADCP - 75 KHz
ADCP - 150 KHzFume hood
Deionized water systemChest freezer (OC and KN only)
CTD/rosette system-70 deg freezer
10-liter Niskin bottlesMET sensors:
Pinger for wire use

Is nighttime work anticipated on this cruise? Yes

    Critical MET sensors:
We would like the IMET
    Critical CTD sensors:
We need a Knudson so we can get a bottom depth trace from the pinger during our deep CTD casts.

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

Long baseline (LBL) transponder navigation? No. of xpndrs/nets:
Ultra-short baseline (USBL) navigation?
Doppler/GPS navigation?

Will you be using portable science vans? Yes How many: 4

Science Van #1
Science Van #2
Science Van #3
12ft/equipment van
20ft/20ft/both rad lab vans
20ft/FCM/rad van
208 3-phase
208 3-phase or 480

Anticipated standard oceanographic cable use:

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?
Will you be bringing any equipment (winches, blocks, etc.) that lowers equipment over the side?

If yes, please provide details: At this point we will not bring our own winch and capstan. Do you have a capstan that can go 10m/min? Do you have a winch (Sea-Mac) that can be used to deploy and recover sediment traps/gas array/primary production array? The sed. trap line is ~500m long. I requested to use the small capstan here in Hawaii but if you have one onboard and it can go 10m/min we will use that.

We will have our own CTD/Rosette with 24 niskin bottles. We do request to have a back-up onboard.
Will there be special requirements for:

    Electrical power
    Equipment handling
    Inter/intraship communications
    Science stowage

If yes to any of the above, please identify: 208 3-phase and 480/

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?
We will have rads aboard. We will also have hazardous materials. I will put together a detailed list!