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:
“There is, I think, no point in the philosophy of progressive education which is sounder than its emphasis upon the importance of the participation of the learner in the formation of the purposes which direct his activities in the learning process, just as there is no defect in traditional education greater than its failure to secure the active cooperation of the pupil in construction of the purposes involved in his studying.”
—John Dewey (1859–1952)
“O, I am smitten with a hatchet’s jaw;
And that in deed and not in word alone.
chorus: I thought I heard a sound within the house
Unlike the voice of one that jumps for joy.
He splits my skull, not in a friendly way,
Once more: he purposes to kill me dead”
—A.E. (Alfred Edward)
“One of the baffling things about life is that the purposes of institutions may be ideal, while their administration, dependent upon the faults and weaknesses of human beings, may be bad.”
—Mary Barnett Gilson (1877–?)