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Peak Performance Buoyancy

Instructor
Guide
Peak Performance Buoyancy
Knowledge Review Part I Answer Key
Note:
To assess knowledge you may review the Knowledge Review from the student
diver’s manual with the diver, ideally prior to participating in skill practice. Pre-
scriptively teach answers to questions student divers may have missed or have
answered incorrectly or incompletely. Ensure student divers understand what they
have missed.

1. Using the Basic Weighting Guidelines, estimate the amount of weight (based on your present
body weight) you want to begin a buoyancy check with if you plan to use:
a. Neoprene dry suit, 11 l/80 cf cylinder in salt water:
(Answer Varies)

b. 7mm/1/4in wetsuit with hood and boots, 11 l/80 cf cylinder in fresh water:
(Answer Varies)

c. 3mm/1/16in one piece wet suit, steel cylinder in salt water:


(Answer Varies)

2. Under what three circumstances should you conduct a buoyancy check before diving?
1. When I change dive equipment
2. When I change diving environments
3. When I haven’t been diving for a while

3. A buoyancy check at the surface includes five steps. Arrange the following into order by
putting a 1 next to the first, a 2 next to the second and so on.
5. As a test, exhale. You should sink slowly.
3. Hang vertical and motionless while holding a normal breath.
1. Put on all equipment.
2. Enter water too deep to stand, and deflate your BCD (and dry suit) completely.
4. Add or subtract weight until you float at eye level while holding a normal breath.

Specialty Course Instructor Guide 41


Instructor Peak Performance Buoyancy
Guide
4. Select those instances in which you need to adjust buoyancy during a dive.
■ To compensate for buoyancy changes as you use your air.
■ To compensate for buoyancy changes due to exposure suit compression.
❑ To begin an ascent.
■ To compensate for increased buoyancy during ascent.
5. When you’re neutrally buoyant, you rise slightly as you inhale and sink slightly
as you exhale.
6. Proper weight and distribution give you greater control in the water.
❑ resistance
■ control
❑ buoyancy
❑ visualization
7. List four reasons for being streamlined while diving.
1. Encourages an efficient kicking style
2. Provides comfort
3. Reduces energy needed to move
4. Keeps equipment off the bottom
8. True or False. Overweighting drags down the lower half of your body, so you
want to avoid being overweighed.
■ True
❑ False
9. To improve your buoyancy control, visualization techniques can help you:
(Check all that apply.)
■ relax.
■ establish a comfortable breathing pattern.
■ move more gracefully through the water.

Student Diver Statement: I’ve completed this Knowledge Review to the best of my
ability and any questions I answered incorrectly or incompletely I’ve had explained
to me, and I understand what I missed.

Name _______________________________________Date _______________

42 Specialty Course Instructor Guide

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