Shared equipment complete description

DEPTH SOUNDING, SUB-BOTTOM PROFILING EQUIPMENT AND PINGERS

SUB-BOTTOM PROFILING EQUIPMENT
ORE Model 140 Transceiver-- a 10,000-watt transmitter receiver. The operating frequency is continuously variable from 3.0 kHz to 13.5 kHz. There are controls for time-varied gain and time-varied gain delay. There are 2 units that are normally used in a primary and spare configuration.
EDO Western Model 515A-350 Towed Transducer-- towed from the ship and generally produces a much better record than a hull mounted transducer. The transducer has a maximum power handling capacity of 10,000 watts and can be operated at 3.5 of 7.0 kHz.
ORE Model 136 Towed Transducer-- used similar to EDO transducer, the transducer has a maximum power handling capability of 10,000 watts and can be operated at 3.5 or 7.0 kHz.

PINGERS
There are three Oceanographic Instrument Systems, 12 kHz bottom-finding pingers shared between R/V SEWARD JOHNSON, R/V SEWARD JOHNSON II, R/V EDWIN LINK and R/V WALTON SMITH with depth ratings of 6500 meters.

WATER COLUMN PROFILING EQUIPMENT

CTD SYSTEMS
Five Sea-Bird 911 Plus underwater units with dual conductivity and temperature sensors are available. There are 8 A/D channels of which six are typically used for a PAR, dissolved oxygen (2 channels), altimeter, fluorometer and transmissometer.
Five deck units are available for use with the Sea-Bird CTDs. The deck unit powers the CTD and decodes the data from the underwater unit. It also provides control for the Carousel Sampler normally used with the Sea-Bird CTD. The deck unit also has inputs for surface PAR, and GPS position. The data is logged, displayed and processed with a Pentium 4 computer using software provided by the manufacturer.

UNDERWATER FLUOROMETERS
Four Seapoint Fluorometers are available with a 6000 meter depth rating. These instruments are normally used with the CTD systems.
Three Sea-Tech Fluorometers are available, one with a maximum depth rating of 3000 meters and two with a maximum depth rating of 500 meters. These instruments are normally used with the MOCNESS systems.

UNDERWATER TRANSMISSOMETERS
There are four WET Labs C-Star transsmisometers available with a depth rating of 6000 meters.
Two Sea-Tech Transmissometers are available with a 25-centimeter path length and a maximum depth rating of 5000 meters. These instruments are normally used with the MOCNESS systems.

ALTIMETERS
There are five Datasonics PSA 900 altimeters available. These are normally used with the CTD systems.

CAROUSEL SAMPLING SYSTEMS
There are five Sea-Bird Carousel systems. Three of the systems are capable of accepting twenty-four 10-liter sampling bottles, the other two systems are capable of accepting twelve 10-liter sampling bottles.

SAMPLING BOTTLES
The following sizes of Niskin bottles are available for use on the Rosette/Carousel systems or on a hydro wire:
10-liter external spring (75)
10-liter lever action (30)
30-liter standard (9)
A supply of messengers is available for use.

SALINOMETERS
Two Guildline Autosal salinometers, Model 8400B, and two Portasal, Model 8410A, salinometer with spare parts and sample bottles can also be provided. The salinometers are interfaced to an IBM compatible PC for data logging display and processing. When used on R/V SEWARD JOHNSON the salinometers are set up in a van specifically designed to provide a stable environment.

DISSOLVED OXYGEN TITRATION EQUIPMENT
Three Sensoren Instrument System dissolved oxygen titrators are controlled by am IBM compatible PC with required ancillary available. These titrators allow dissolved oxygen determinations using the Winkler Titration Method. When used on R/V SEWARD JOHNSON the titrators are set up in a van specifically designed to provide a stable environment.
Two Brinkman Model 665 Dosimat titrators are also available.

EXPENDABLE BATHYTHERMOGRAPH SYSTEMS
One Sippican Mark 21 XBT Digitizer--unit is used with a PC computer to log and display XBT data. This system can accommodate T4, T5, T7, T10, T11, XCTD and XSV probes.
Two deck launchers and 3 hand launchers are available.

MISCELLANEOUS

Packard Tri-Carb Liquid Scintillation Counter
20' long x 8' wide x 8' high outside dimensions

RADIOISOTOPE VAN (Small)
Beckman LS 6500 Liquid Scintillation Counter
8' long x 6' wide x 6.5' high, inside dimensions
Air-conditioned
Unistruted

HYDRO VAN
20' long x 8' wide x 8' high, outside dimensions
Precision temperature controlled for high quality salinity and dissolved oxygen titration

SMALL GENERAL PURPOSE VAN
10' long x 6' wide x 6.5' high, outside dimensions
Air-conditioned
Unistruted.

STORAGE VAN
20' long x 8' wide x 8' high, outside dimensions

RADIOISOTOPE VAN (Large)
Beckman LS 6500 Liquid Scintillation Counter
20' long x 8' wide x 8' high outside dimensions
Fume hood
Home style refrigerator/freezer
Air-conditioned
Unistruted

MOCNESS
A MOC-1, a double MOC 1 and a MOC-10, Multiple Opening and Closing Net Sampling System (MOCNESS) are available. These systems can be equipped with conductivity, temperature, fluorometer, transmissometer, and dissolved oxygen sensors.

CORERS
One Benthos Model 2171 gravity corer with spare nose cones and core catchers is available. The driving weight can be adjusted in 20-kilogram steps from 20 to 120 kilograms.
Two piston corers are available. One corer uses stacked weights and can be launched from smaller vessels such as the R/V WALTON SMITH. The other uses a fixed weight and is suitable for use on larger vessels.
One Ocean Instruments’ Multicorer, MC-800 is available. This instrument has the ability to core up to 8 samples simultaneously.

The items listed above are the major items in the shared use equipment pool additional minor equipment is not listed.
Requests for equipment not presently available, submitted prior to August 1 for the following year, will be considered for inclusion in proposals for shared use equipment. While the Shipboard Support Technician Group will assist in efforts to locate any equipment needed by a researcher, the terms of loan must be worked out between the researcher and the owner of the equipment.