Cave Line Symbols
Cave arrows, Line arrows or Dorff markers (after Lewis Holtzendorff). These are plastic arrowhead markers which are hooked onto a cave line by wrapping the line around the arrow through the slots. They are used to indicate the direction to the exit, and can be identified by feel. The message is simple, but of critical importance, as if a diver does not know which way to go at a line junction there is a risk of serious trouble. Line arrows are used at a junction on the permanent line, so when the diver gets back to the tie-off, he or she can identify which way to turn.
Read more about this topic: Diver Communications
Famous quotes containing the words cave, line and/or symbols:
“Mankind which began in a cave and behind a windbreak will end in the disease-soaked ruins of a slum.”
—H.G. (Herbert George)
“Gascoigne, Ben Jonson, Greville, Raleigh, Donne,
Poets who wrote great poems, one by one,
And spaced by many years, each line an act
Through which few labor, which no men retract.
This passion is the scholar’s heritage,”
—Yvor Winters (1900–1968)
“My image is a statement of the symbols of the harsh, impersonal products and brash materialistic objects on which America is built today. It is a projection of everything that can be bought and sold, the practical but impermanent symbols that sustain us.”
—Andy Warhol (1928–1987)