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Diving in close vicinity to mooring chain in a seaway or wind. Chain lifting under tension and dropping on diver in pinch zone Physical restraint from entering danger zone by way of limited umbilical length and underwater tending. Remain above chain at all times when near pinch zone if necessary to work in the area.
The risk is unacceptable unless the diver is physically constrained from approaching the thrusters' danger zones. This is achieved by deploying the divers by diving stage or bell, limiting the length of excursion umbilical that can be let out, and using underwater tending points where necessary. Scuba is not used from dynamically positioned ...
Crewed submersibles can extend depth range to full ocean depth, and remotely controlled or robotic machines can reduce risk to humans. The environment exposes the diver to a wide range of hazards, and though the risks are largely controlled by appropriate diving skills , training , types of equipment and breathing gases used depending on the ...
Stinging jellyfish, rays with their whip-like tails and sharks on the hunt are some ocean hazards that might typically worry beachgoers. Six people drowned in rip currents over a recent two-day ...
That's right, sandy beaches are dirtier than the ocean waves. A new study out of the University of Hawaii at Manoa found E. coli, known for causing abdominal problems, in beach sand due to sewage ...
Ocean warming causes water stratification, deoxygenation, and the formation of dead zones. Dead zones and OMZs are hotspots for anammox and denitrification, causing nitrogen loss (N 2 and N 2 O). Elevated atmospheric carbon dioxide acidifies seawater, decreasing pH-dependent N-cycling processes such as nitrification, and enhancing N 2 fixation ...
The First World Ocean Assessment of 2015 showed that the ocean is important for the climate and support of life on the whole planet, and that critical ocean systems are under threat, making the exploration and mapping of the ocean a key environmental goal to facilitate understanding of the dynamics of ocean systems and the changes that are ...
The Atlantic Ocean is teeming with life, but for the first time researchers have discovered dead zones in these waters - areas low in both oxygen and salinity - off the coast of Africa. Fish can't ...