Cruise Planning Questionnaire

    Vehicle(s) required:
    Name of ship for ROV ops:
    Ch Sci:
R. Gregory Lough (Greg)
Northeast Fisheries Science Center
144 Water St.
Woods Hole, MA 02543
(508) 495-2290
    POC / contact info:
Departure port & date:2 April 1997
    Distance to first station:
    Number of stations:
    Distance between stations:
    Total days on station:
Arrival port & date:17 April 1997
Op area:Georges Bank
Lat/Lon:41 00 N, 67 30 W
Depth range:20 - 200 m
    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: Lough: FM2520 8K3C14DP; Buckley: ; Incze: ; Durbin: ; Sullivan: ;

    Science objectives/activities planned:
The scientific focus of this cruise is to identify and follow a patch of larval cod and/or haddock on the southern flank of Georges Bank and determine its rate of advection and dispersion, growth and mortality of larvae and their zooplanktonic prey. Specific objectives of the cruise are: (1) To describe and quantify the physical exchange of water and organisms across boundaries of the bank; (2) To estimate vital rates (feeding, growth, non-predatory mortality) in the different environments; (3) To determine temporal and spatial scales of aggregation for fish larvae and their prey in relation to physical features; (4) To evaluate the interrelations and relative importance of larval swimming behaviior, physiological condition, and physical retention and loss processes. Ship-board laboratory experiments will be conducted to quantify the feeding of larval cod in natural prey assemblages, and to estimate grwoth, production and mortality of the copepod Calanus.

Cruise activities will be conducted in three phases: (1) BONGO SURVEY; (2) TIME-SERIES AT LARVAL PATCH; (3) SMALL-SCALE PATCHINESS:

(1) BONGO SURVEYS: During the first three days of the cruise a grid of about 49 stations will be sampled with a bongo-net. Each transect of the grid (7 stations x 7 transects) is located across the fronts from shoal (40-m isobath) to deep (100-m isobath) water. With real-time processing of samples, the gird of station will define the higest concentration of larvae. On a selected transect, 3-4 GPS/ARGOS/VHF drifters will be deployed.

(2) TIME-SERIES AT PATCH: A cluster of 5 GPS/ARGOS/VHF drifters will be deployed at the patch center and followed for a number of days sampling continuously with CTD, 1-m MOCNESS, 1/4-m MOCNESS, and plankton pump. A single spar buoy fitted with caged cod larvae will be deployed intermittently between operations. There also will be a series of three repeated cross-bank hydrographic transects which moves with the drifter cluster. Note that the US Coast Guard is scheduled to deploy a set of surface drifters (by air) at the same location of our drifters.

(3) SMALL-SCALE PATCHINESS: Two of the clustered drifters will remain in the water as reference points to conduct a series of detailed transects looking for small scale (<<1 km) spatial variability. All the above samplers in (2) will continue to be deployed. Recovery of all drifters will take a day or two during this phase; two drifters with fresh battery packs will be deployed in the larval patch to document flow between the April and May process cruises.

WHOI shipboard scientific instrumentation desired:
    12 kHz Transducer
Fume Hood
Chest Freezer
CTD/Rosette System
10-liter Niskin Bottles
Pinger for Wire Use

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

Will you be using portable science vans? Yes How many: 1

Science Van #1
Science Van #2
Science Van #3
berthing for 4 scientists
01 deck
?, bath room outside

Anticipated standard oceanographic cable use:

Instrument Weight(s)
Maximum Depth
    Conducting hydro
Seabird CTD 911, Bongo net with Seabird CTD 19, MOCNESS-1 m, MOCNESS-1/4 m, Plankton pump.
200 lb ?, 200 lb, 500 lb, 280 lb, 1000? lb.
300 m, 300 m, 150 m, 150 m, 75 m,.
    Steel hydro
    Steel trawl
    .681" fiber optic
    Do you require slip rings?
YesNumber of conductors:2
    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:
Will there be special requirements for:

    Electrical power
    Equipment handling
    Inter/intraship communications
    Science stowage

If yes to any of the above, please identify: (1) Expect MECCA connections to easily switch between samplers. See below for other comments.

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:
    Electronic equipment used in the ALVIN personnel sphere:
    Other comments and information:
(2) Need efficient communications from bridge to lab to deck.
(3) Need good depth readout in lab as MOCNESS is deployed within a couple meters of the bottom.
(3) Bridge should have MOCNESS angle readout to monitor ship's speed to maintain net at 45 degree angle.
(4) Real-time access to navigation and internet data.
(5) Need to pull-off lat-long from ship's system to MOCNESS computer.
(6) Crane handling of drifters during recovery.
(7) UNIX work station on or near bridge for modeling observed drifter tracking.
(8) Storage for large 1.6 m holey-sock drogues, 8-10 Brightwater drifters.
(9) Storage for MOCNESS nets and sample jar boxes.
(10) Need fume hood over sink in wet lab where plankton samples will be preserved with formalin.
(11) Hazardous/Toxic Chemicals: Formalin, Ethanol alcohol, liquid nitrogen.
(12) Scientific cruise personnel will be 18.

Date Submitted: 12/27/96 12:00 PM