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:
“Stands the Spring! heralded by its bright-clothed
Trumpeters, of bough and bush and branch;
Pale Winter draws away his white hands, loathed,
And creeps, a leper, to the cave of time.”
—Philip Larkin (1922–1986)
“What, will the line stretch out to the crack of doom?”
—William Shakespeare (1564–1616)
“Children became an obsessive theme in Victorian culture at the same time that they were being exploited as never before. As the horrors of life multiplied for some children, the image of childhood was increasingly exalted. Children became the last symbols of purity in a world which was seen as increasingly ugly.”
—C. John Sommerville (20th century)