1. Kellam High School Oceanography
Marine
Instruments
Kellam High School Oceanography
Marine Instruments

2. Table of Contents Measuring and Collecting Tools Nets and Sieves ROVs
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3. Measuring and collecting tools

4. gravity core
The most basic sampling device used to collect core samples from the seafloor, it penetrates less than 10 meters into the sediment
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5. Nansen bottles
Sub-surface measurements of water samples are made with water sampling bottles.
There it is closed by tripping action. When the bottles have been brought back on deck, the water samples are analyzed.
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6. Niskin Bottle, Van Dorn Bottle
Used to collect water samples from discrete depths, which are then chemically analyzed.
Phosphates, nitrates, and silicates
Dissolved Oxygen
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7. Shipek Grab
Samples a wide variety of ocean and fresh water sediment. The sampler is designed to take samples in soft ooze, clay, sand, gravel and pebbles on flat or gently sloping bottoms.
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8. Grab Sampler
This instrument is used to remove a piece of the ocean floor for study
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9. Hydrometer
A device used to measure the densities of liquids and solutions.
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10. Secchi Disk
Used to estimate the transparency of seawater, and can provide a relative measure of productivity or turbidity.
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11. Drift bottles The use of drift bottles as a means of charting
ocean currents is an
old one, and their use
in research is not
without precedent.
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12. Current Meter
An instrument for measuring the velocity, force, etc., of currents.
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13. Temperature and depth recorder
With this attached
to the collecting
net, the depth and
temperature can be
calculated to
determine exactly
where and at what
temperature the fish were collected in the water
column.
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14. Salinonometer
A hydrometer that determines the concentration of salt solutions by measuring their density
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15. Refractometer
An instrument used to measure the salt concentration of seawater by using the refraction of light.
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16. Hydrophone A microphone for acoustic measurements in fluids.
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17. SCUBA
Self
Contained
Underwater
Breathing
Apparatus
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18. Echo Sounding The use of a timed sound wave to determine
the depth of the water
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19. Global Positioning System (GPS)
A worldwide radio-navigation system that utilizes satellites to triangulate a specific location on earth.
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20. Nets and Sieves

21. Dip Net
Useful for scooping up seaweed, jellyfish, and other drifting organisms from docks and the side of the vessel.
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22. Sediment Sieves Used to analyze sediment grain size composition.
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23. Plankton Net
A cone shaped net of fine mesh material with a collecting jar at the base.
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24. Phytoplankton nets
This fine mesh net collects the smallest plant plankton, which is then easily analyzed under the compound scope for diversity and species composition.
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25. Neuston Net
This new large mesh surface water net enables us to tow for the larger zooplankton (animal plankton), which are readily visible under the dissecting scope.
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26. Dredge
This device is dragged across the ocean floor to obtain biological or geological samples.
It can take many shapes either cylindrical or boxlike.
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27. Trawl Net
The mouth of the net is kept open through "otter boards" attached to the leading ends of the net, or, by current passing through the net.
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28. Crab Pots Crab Pots are used for collecting crabs for study and food
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29. ROVs

30. ROVS
Remotely operated underwater vehicles (ROVs) are unoccupied, highly maneuverable underwater robots operated by a person aboard a surface vessel.
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The End
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