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  2. Line marker - Wikipedia

    en.wikipedia.org/wiki/Line_marker

    A hybrid marker, also known as a referencing exit marker or REM, is a more recently developed line marker used as a directional marker by the diver placing it, and seen as a cookie by others. They are rectangular with slots like the arrow and cookie forms for attachment to a line, and have a relatively large blank space on one end to add ...

  3. Distance line - Wikipedia

    en.wikipedia.org/wiki/Distance_line

    In this application it is known as "gold line". [8] Marking (knots) Personal line may be marked at regular intervals by knots, allowing the diver to make an easy estimation of distance travelled by counting the knots as the line is deployed. 10 feet (3 m) is a popular spacing. [4]

  4. Surface marker buoy - Wikipedia

    en.wikipedia.org/wiki/Surface_marker_buoy

    A surface marker buoy, SMB, dive float or simply a blob is a buoy used by scuba divers, at the end of a line from the diver, intended to indicate the diver's position to people at the surface while the diver is underwater.

  5. Diver communications - Wikipedia

    en.wikipedia.org/wiki/Diver_communications

    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.

  6. Glossary of underwater diving terminology: H–O - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_underwater...

    line marker. See: Line marker. Line arrows, cookies and sometimes clothes pegs. Tags used to indicate the direction to an exit, midway point between exits, jumps and personal markers to identify divers on a guide line in an overhead environment. [63] line tender. See: diver's attendant. line trap Narrow gap where the guide line passes but ...

  7. Human factors in diving equipment design - Wikipedia

    en.wikipedia.org/wiki/Human_factors_in_diving...

    Line markers are generally used on permanent guidelines to provide critical information to divers following the line. Slots and notches are used to wrap the line and secure the marker in place. Passing the line through the enlarged area at the base of the two slots allows the marker to slide along the line, or even fall off if brushed by a diver.

  8. Diving equipment - Wikipedia

    en.wikipedia.org/wiki/Diving_equipment

    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 ...

  9. Underwater searches - Wikipedia

    en.wikipedia.org/wiki/Underwater_searches

    The diver may tow a surface marker buoy to show their position to the support team if conditions allow. The diver unreels a section of distance line appropriate to the visibility and marks the start position by a peg, loose marker, compass heading, or a pre-laid marker line extending outwards from the datum position.

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