HFD Safe Practices Dive Manual(Chapters 4-5/Appendix 1-3))

Question 1

4 underwater dive procedures

Answer 1

buddy system
dive communications
normal ascent
emergency ascent

Question 2

8 rules for buddy system

Answer 2

1)know hand and line signals
2)if a signal is given, acknowledge
immediately…failure to respond to a signal
must be considered an emergency
3)always maintain contact with buddy
(in poor visibility use a buddy line)
4)monitor condition/actions of your buddy
5)never leave your buddy unless he cannot
be freed without additional assistance
6)establish a “lost diver” plan
7)if one diver aborts dive, the other aborts
8)know proper buddy breathing method

Question 3

the greatest single safety factor in scuba

operations is the _____.

Answer 3

buddy system

Question 4

divers are responsible for _____ and _____.

Answer 4

assigned tasks

each other’s safety

Question 5

divers in the water must be _____ or _____.

Answer 5

either in pairs

line tended from the surface

Question 6

6 step emergency management procedures

Answer 6

1)make contact/rescue victim
2)establish ABCs as required
3)administer 100% O2 if appropriate
4)notify EMS
5)notify diving physicial and recompression
chamber through chain of command(CoC)
6)make proper notifications thru CoC

Question 7

explain the _____ of the dive incident to

_____.

Answer 7

circumstances

evacuation teams/medics/physicians

Question 8

5 reasons to terminate a dive

Answer 8

1)lead diver or DSO determines that 
conditions are jeopardizing safety of the
dive team
2)communications are lost and cannot be
quickly re-established between members
of the dive team
3)diver fails to respond correctly to signals
or communications
4)diver switches to reserve air supply
5)diver requests termination

Question 9

4 diver to tender line signals

Answer 9

1 pull = ok/ok?
2 pulls = give me some slack
3 pulls = found object
4 pulls = help

Question 10

4 tender to diver signals

Answer 10

1 pull = ok/ok?
2 pulls = stop, take up slack, reverse
direction
3 pulls = come to the surface
4 pulls = stop!

Question 11

any line signal given will be answered by

______.

Answer 11

a repetition of the signal received

Question 12

2 normal ascent (NDL diving) requirements

Answer 12

ascend at rate of 1’/s

never hold your breath

Question 13

5 step emergency ascent

Answer 13

1)drop any hand carried objects
2)ditch weight belt
3)ditch scuba only if absolutely necessary.
limited air may be obtained from scuba
as you ascend
4)inflate bcd or floatation device at surface
5)exhale continuously during ascent

Question 14

2 reasons to perform an emerg. ascent

Answer 14

suddenly out of air

entangled and buddy cannot quickly assist