Quiz 3

Question 1

When computing a table and schedule for a repet dive, use the _______ ______ of that dive and _______ (not bottom time).

Answer 1

Max Depth

ESDT (equivalent single dive time)

Question 2

Divers are not particularly affected by the action of surface waves unless operating in _______ or _________.

Answer 2

Surf, or shallow waters

Question 3

When planning an ascent to altitude after diving the surface interval depends on the planned increase in _________ and the highest __________ ______ obtained in the previous 24 hour period

Answer 3

Altitude, group designator

Question 4

• small to intermediate areas
• quick to set up
• minimum equipment required
• not practical for large area of coverage

These describe which bottom search method?

Answer 4

Circle line search

Question 5

the four types of bottom searches are?

Answer 5

• jack stay
• circle line search
• surface tended
• electronic

Question 6

Define the following

RNT:
ESDT:

Answer 6

Residual Nitrogen time

Equivalent single dive time

Question 7

Define the following:

MD:
TDT:
TBT:
TTD:

Answer 7

Max Depth
Total Dive Time
Total Bottom Time
Total decompression time

Question 8

Define the following

LS: 
RB:
LB: 
R: 
L:
RS:

Answer 8

Left Surface 
Reached bottom 
Left Bottom 
Reached Decompression Stop 
Left Decompression Stop 
Reached surface

Question 9

Give the travel rates for the following:

On descent:
On ascent:
Slight Variations in ascent rate of ____ fpm, are acceptable.

Answer 9

On descent: no greater than 75 feet/minute
On ascent: 30 feet/min
20-40 fpm

Question 10

With a delay greater than 1 minute, deeper than 50 few you have to:

Round ____ the delay time to the next whole minute and _____________ then compete the decompression schedule.

Answer 10

up; add to the bottom time

Question 11

If a delay in ascent greater than 1 minute occurs shallower than 50 few, you must: Round the delay time ______ to the next whole minute and add the delay time to the divers _________________.

Answer 11

up: First decompression stop time

Question 12

What are the 3 primary objectives of recompression therapy?

Answer 12

Compress the gas bubble
Sufficient time for gas absorption
Increase O2 in blood

Question 13

What are the two types of tx tables?

Answer 13

Air Tables

O2 Tables

Question 14

Nitrogen Narcosis onset generally begins at _____ fsw

Answer 14

99 (4 atmospheres)

Question 15

True or False: Nitrogen narcosis is progressive with increasing time at depth

Answer 15

False

Increasing depth not time

Question 16

Partial pressures for the following?

Answer 16

Depth+33/33=ATA

ATA X % of gas=PP