Purposes
The shot has several purposes. The line is useful for divers in conditions of low visibility or strong tides where underwater navigation between the surface and the dive site is difficult or on deep dives where a navigation error would dramatically reduce useful underwater time. Divers can use the line to help buoyancy control, to ease long decompression stops and to prevent drift when ascending in a current.
The buoy marks the dive site for the people on the surface, who are generally on the dive boat, who provide safety cover for the divers. This helps them focus on the place where the divers are likely to return to the surface and helps them return to the dive site more quickly after the boat has moved away from the site.
Read more about this topic: Diving Shot
Famous quotes containing the word purposes:
“It is not enough that we are truthful; we must cherish and carry out high purposes to be truthful about.”
—Henry David Thoreau (1817–1862)
“This is the true joy in life, the being used for a purpose recognized by yourself as a mighty one; the being thoroughly worn out before you are thrown on the scrap heap; the being a force of Nature instead of a feverish selfish little clod of ailments and grievances complaining that the world will not devote itself to making you happy. And also the only real tragedy in life is being used by personally minded men for purposes which you recognize to be base.”
—George Bernard Shaw (1856–1950)
“Since [Rousseau’s] time, and largely thanks to him, the Ego has steadily tended to efface itself, and, for purposes of model, to become a manikin on which the toilet of education is to be draped in order to show the fit or misfit of the clothes. The object of study is the garment, not the figure.”
—Henry Brooks Adams (1838–1918)