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A delayed surface marker buoy (DSMB), decompression buoy, or deco buoy is an inflatable buoy which can be deployed while the diver is submerged and generally only towards the end of the dive. The buoy marks the diver's position underwater so the dive boat crew can locate the diver even though the diver may have drifted some distance from the ...
A delayed or deployable surface marker buoy (DSMB), also known a decompression buoy, is a soft inflatable tube that is attached to a reel or spool line at one end, and is inflated by the diver under water and released to float to the surface, running out the line as it ascends. This provides information to the surface that the diver is about to ...
Some of these signals, or pre-arranged variants, can be used with a surface marker buoy. The diver pulls down on the buoy line to make the buoy bob in an equivalent pattern to the rope signal. Effective line signals need a free line without much slack – before attempting a line signal, the slack must be taken up, and the line pulled firmly.
Diving reel, dive spool or line holder to store and transport a distance line or line for a surface marker buoy. A dive spool, or line spool, is a short cylindrical tube with a large flange at each end, around which a length of line can be wound, and a line holder is a flat H-shaped frame or piece of rigid sheet material on which a length of ...
In some cases scuba divers may be connected by a tether, or buddy line, which allows communication by line signals, and professional scuba divers often tow a surface marker buoy, which may be used to transmit a very limited range of signals to surface personnel, mainly location of the diver, and if the diver needs help. [citation needed]
A commonly used procedure for ascent in open water when not ascending along a shot line or anchor cable is to use the more recently developed delayed surface marker buoy, or decompression buoy, inflated and deployed at the start of the ascent to notify any vessel in the vicinity of presence and location of the divers as well as helping to ...
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1. See: dive/surface valve 2. See: diving support vessel DSMB. Also: "delayed surface marker buoy" and "decompression buoy" An inflatable marker buoy deployed from underwater to indicate the position of a diver and to control ascent rate. Can also be used to mark a position or signal an emergency. Subsection: Top, Da, De, Di, Do, Du