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tethered drivers
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Voyage
NURP
Undersea Technologies
Tethered Drivers
Undersea Technologies
Surface supply delivers unlimited air to the divers, but keeps them on a leash.
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Diving bell serves as a transport and refuge for divers.
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Dive bell equipped with compressed air allows divers to decompress underwater.
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Dive bells provide a stable mid-water station for air,and communications.
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Clear dome in this bell allows scientists to record observations in midwater.
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In the air-filled bell dome, divers can talk to each other and the surface.
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Stable on the pool bottom, a bell bobs when hanging from a pitching ship.
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NURC at UNCW's dive bell deployed from the R/V Seahawk.
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A dive bell support ship must be in a multi-point mooring to avoid dragging.
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Surface supplied air is used in polluted water to avoid contact or ingest.
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Compared to old hard hat diver, Exo mask diver doesn't need lead boots.
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(2.22 MB)
A dome for talking to the surface and other divers. It is called a personaltalk station or PTS.
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Early hard hats were heavy in air, but buoyant underwater.
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Surface-supply and dive bells greatly extend the time divers could stay down.
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NURP dive bell used in the 1980s-- scientists prefer the freedom.of scuba.
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Umbilical diving through the ice provides a safety line back to the hole.
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J. Peress' 1-atm dive suit, Tritonia, explored the Lusitania wreck in 1935. JimJarrett was Peress's chief diver and made this dive to 312 feet. This suitwas a precursor to the Jim suit, named for Jim Jarrett.
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New bubble helmets popular for TV-- speech is clear and face is visible.
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Pre-dive check list ensures safety of bell dive operations.
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