Open Water Diver Chapter 4 Review Questions with complete Solutions Already Passed
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Course
Open water diver
Institution
Open Water Diver
Open Water Diver Chapter 4 Review Questions with complete Solutions Already Passed
State at least three reasons to always dive with a buddy - Answers • Safety (who is there to assist in the case of an emergency)
• Backup (provides a second Total Diving System)
• Fun
You should dive with ...
Open Water Diver Chapter 4 Review Questions with complete Solutions Already Passed
State at least three reasons to always dive with a buddy - Answers • Safety (who is there to assist in the
case of an emergency)
• Backup (provides a second Total Diving System)
• Fun
You should dive with a buddy who you are comfortable with. When diving with a new buddy: - Answers
• Review communication signals
• Become familiar with each other's Total Diving System
• Ensure both divers are comfortable and ready to dive
List six guidelines to follow when using a computer to plan and execute dives - Answers • Always have
your own dive computer
• Do not share another diver's computer
• Check the dive computer's battery life before diving
• Observe the warnings and limits of your dive computer
• Remain within your limits and be conservative
• Have a contingency plan if your dive computer fails
Why use a dive computer? - Answers • A dive computer provides the most effective method of tracking
nitrogen absorption during a dive
• They require training and practice to use effectively
• An understanding of dive tables is important to safely use a dive computer
What is Decompression Diving? - Answers • Occurs when a diver stays at depth beyond the limits of the
dive tables or their computer
• Nitrogen levels prevent a safe direct ascent to the surface
• Exceeds the training taught in the Open Water Diver course
How do Dive Computers and Tables differ relating to Dive profiles? - Answers • Recreational dives are
multi-level with several depths
• Dive tables can only calculate single-level dives
• This limits your total bottom time
, • Computers continuously update your depth and time profiles
Dive Planning Terminology: Depth - Answers The deepest point reached during the dive, no matter how
briefly you stayed there
Dive Planning Terminology: Bottom Time - Answers The amount of elapsed time from the start of your
descent until the start of your ascent
Dive Planning Terminology: Total Dive Time - Answers The total amount of elapsed time from the start
of your descent until you reach the surface
including ascent and decompression stop time.
Dive Planning Terminology: Surface Interval - Answers The amount of time the diver stays out of the
water or on the surface between dives,
beginning as soon as the diver surfaces and ending at the start of the next descent
Dive Planning Terminology: No-Decompression Limit - Answers The maximum allowed time at depth
without having to perform a mandatory
decompression stop during the ascent.
Dive Planning Terminology: No-Decompression Dive - Answers Any dive made to a depth and time that
allow a direct ascent to the surface without
mandatory decompression stops
Dive Planning Terminology: Residual Nitrogen - Answers Residual nitrogen is the amount of excessive
nitrogen dissolved in our bloodstream and
tissues after a dive and all previous dives in a series. Since the goal is to make no-decompression dives,
the
remaining nitrogen is what we have to track during the diving day and week. A dive computer does this
automatically
Dive Planning Terminology: Decompression Dive - Answers Any dive which exceeds the No-
Decompression Limits at a certain depth, so that a
direct ascent to the surface is not possible and mandatory decompression stops must be made
The pre-dive briefing should include the following specifics and your dive parameters: - Answers •
Objective of the Dive
• Conditions of the Dive
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