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  Nets in the back of the boat used to collect anything that gets caught in it. They could use that cargo to trade
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  When 2D images are used to make 3D structure. Good for sea floors.
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  Albatross was the first research vessel built for oceanographic purposes
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  The Earth's magnetic field is measured. This is good for shipwreck and looking at the sea floor
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  Good for exploring the seafloor without a person being down there.
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  This was a big discovery because it shows evidence of continental drift theory. It is a continuous rift throughout the seafloor.
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  Sputnik was the first satellite to launch. It inspired many new explorations including space and larger masses like the ocean.
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  It was an experiment, Conshelf one, a team was sent to live underwater for a week.
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  The conductivity is measured for the salinity, also shows the relation between CTD.
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  Measures wave's current by speed and direction.