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In underwater diving, a downline is a piece of substantial cordage running from a point at the surface to the underwater workplace, and kept under some...

Open water diving is underwater diving in an open water environment, where the diver has unrestricted access by way of a direct vertical ascent to the...

Diving support equipment is the equipment used to facilitate a diving operation. It is either not taken into the water during the dive, such as the gas...

jackstay. A downline used for open ocean diving is much the same as a shotline, but does not reach all the way to the bottom. An open-ocean downline is weighted...

A diving shot line, shot line, or diving shot, a type of downline or descending line (US Navy), is an item of diving equipment consisting of a ballast...

A diving team is a group of people who work together to conduct a diving operation. A characteristic of professional diving is the specification for minimum...

Freediving, free-diving, free diving, breath-hold diving, or skin diving, is a mode of underwater diving that relies on breath-holding until resurfacing...

Commercial diving may be considered an application of professional diving where the diver engages in underwater work for industrial, construction, engineering...

support and guide equipment for transport between two points. A downline is a diving jackstay from an anchor point at or above the surface to the underwater...

Wall diving is underwater diving alongside a near vertical face, usually an underwater cliff. It is a type of reef diving popular among recreational divers...

W. Bech. Retrieved 25 October 2022. "Commercial Dive Gear: Diving Helmets: DESCO 29019D Mark V Diving Helmet". Milwaukee, Wisconsin: DESCO Corporation...

diver may dive on breath-hold (freediving) or use breathing apparatus for scuba diving or surface-supplied diving, and the saturation diving technique...

Deep diving is underwater diving to a depth beyond the norm accepted by the associated community. In some cases this is a prescribed limit established...

safety of breathable atmosphere at the surface. Cave diving, wreck diving, ice diving and diving inside or under other natural or artificial underwater...

Sea, four divers were in a diving chamber system on the rig's deck that was connected by a trunk (a short passage) to a diving bell. The divers were Edwin...

Surface-supplied diving is a mode of underwater diving using equipment supplied with breathing gas through a diver's umbilical from the surface, either...

Scuba diving is a mode of underwater diving whereby divers use breathing equipment that is completely independent of a surface breathing gas supply, and...

Surface-supplied diving equipment (SSDE) is the equipment required for surface-supplied diving. The essential aspect of surface-supplied diving is that breathing...

Kenneth William – British expert on underwater and exercise physiology. Downline (diving) – Rope from the surface to an underwater workplace Downstream scuba...

Diving bells are usually suspended by a cable, and lifted and lowered by a winch from a surface support platform. Unlike a submersible, the diving bell...