Recreational Dive Planner - Padi

Three
Section
Dive Tables
Definitions
Review
You’ve learned the following terms in the discussions
on dive computers and in learning to use the RDP.
This list provides a convenient and quick reference
and review.
Actual Bottom Time (ABT) — In repetitive diving,
the total time actually spent under water (in minutes)
from the beginning of descent until leaving the bottom
for a direct continuous ascent to the surface or
safety stop.
Adjusted No Decompression Limit — The time
limit for a repetitive dive that accounts for residual
nitrogen. Found on Table 3 of the RDP Table. Actual
Bottom Time should never exceed the adjusted no
decompression limit.
Ascent Rate — The proper speed for ascending,
which is no faster than 18 metres per minute. A rate
slower is acceptable, and appropriate.
Bottom Time — The time from the beginning of
descent until the beginning of a direct, continuous
ascent to the surface or safety stop.
Decompression Diving — Diving that requires planning
stops during ascent to avoid decompression
sickness. In recreational diving (no decompression
diving), a decompression stop is considered an emergency
procedure only, and is never an intentional part
of the dive plan.
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