(2024 Exam) USN Dive Man

Question 1

How many NDC variants are authorized on the ANU?

Answer 1

5, ranging from open circuit air (N2O2) to closed circuit N2O2 and HeO2.

Question 2

How often should a diver monitor their NDC’s?

Answer 2

Every two to three minutes.

Question 3

How long shall a diver wait if he loses his NDC data?

Answer 3

24hrs.

Question 4

When shall a diver about dive if the NDC does not transition into dive mode?

Answer 4

If it doesn’t transition by 10fsw.

Question 5

How long does a desaturating diver that loses his NDC data need to wait before flying?

Answer 5

After a minimum of 24 hours have elapsed.

Question 6

EP for loss of NDC during dive?

Answer 6

1) Abort dive
2) Use buddy divers NDC as the governing NDC
3) If single diver or both divers loose NDC, the diver(s) must weigh the risk of DCS from immediately surfacing.Obviously if the diver(s) know they are well inside no-decompression limits, they should abort the dive and ascend following the slowest bubble. The diver(s) should be observed for one hour after surfacing.

Question 7

Below what temperature is considered cold water diving?

Answer 7

37 degrees and colder

Question 8

At what temperature is considered warm water diving?

Answer 8

Diving operations above 88 degrees.

Question 9

Diving in water temps above ____ degrees should not be attempted w/out first contacting __________?

Answer 9

99 degrees
NAVSEA 00C

Question 10

When diving in warm water, a diver should hydrate fully(approx 500ml or 17oz) ____ hours before diving?

Answer 10

two

Question 11

Approx. how much water should be replenish for every hour of diving in warm water?

Answer 11

500ml

Question 12

How long must a diver wait in a cool environment prior to repeating a warm water dive?

Answer 12

12hrs minimum, diver must be re-hydrated, calorically repleted to baseline weight and rested.

Question 13

At what temperature is thermal protection usually needed?

Answer 13

below 80 degrees.

Question 14

At what altitude are Air D tables good to without correction?

Answer 14

300ft

Question 15

A minimum positive clearance of ___ feet must be established when diving below bilge keel on surface ships or below the maximum beam on submarines.

Answer 15

six feet

Question 16

A positive clearance of ____ feet between the pier and the vessel should be established and maintained in order to provide an egress path for divers.

Answer 16

four

Question 17

When are GFI’s required?

Answer 17

GFIs are required when line voltage is above 7.5 VAC or 30 VDC.

Question 18

Where are the “max working shackle placed on the umbilical when diving on a DP vessel?

Answer 18

It is placed to ensure the primary divers will not get closer than 15 ft and the standby diver 10 feet to the nearest hazard.

Question 19

Standby diver’s umbilical must be a minimum of _____ longer than the primary diver’s umbilical in order to provide assistance in the case of an emergency?

Answer 19

5 feet

Question 20

OPNAVINST 3150.27 requires retention of Command Dive Logs for ___ years?

Answer 20

3 years

Question 21

F.A.R.’s can be accessed at _________ ______, or through _______ and _______ ?

Answer 21

Https://Secure.Supsalv.org OOC3 PMS-EOD and SPECWAR quick links at Supsalv.org

Question 22

____ manual provides instructions for investigation and reporting procedures required in instances when the mishap may have occurred as a result of procedural or personal error.

Answer 22

Judge Advocate General (JAG)

Question 23

Wet suit/Un-Hooded dives should start at ____ yards and move in to diver comfort?

Answer 23

1000 yards

Question 24

Wet suit / Hooded divers should start at ____ yards and move in to divers comfort?

Answer 24

600 yards

Question 25

Helmeted divers should start at _____ yards and move in to divers comfort?

Answer 25

3000 yards

Question 26

BUMEDINST for Hyperbaric O2 Treatment in Navy Recompression Chambers?

Answer 26

BUMEDINST 6320.38

Question 27

NSTM Ch 74 is for?

Answer 27

Gas Free Engineering

Question 28

Mil-STD-1330 is for?

Answer 28

Cleaning and testing of shipboard oxygen, and nitrogen systems, Helium.

Question 29

OPNAVINST 5100.19C, Appendix A-6 is for?

Question 30

OPNAVINST 5100.23 is for?

Question 31

OSHA 29 CRF part 1910 is for?

Answer 31

Commercial Diving Operations

Question 32

OOC3 is for?

Answer 32

Diving

Question 33

OOC4 is for?

Answer 33

Certification

Question 34

OOC5 is for?

Answer 34

Husbandry

Question 35

Nitrogen Narcosis must be considered as dive profiles exceed _____fsw?

Answer 35

100fsw

Question 36

A diver in SS with heavy weights can usually work in currents up to ___ knots w/out undue difficulty, and can accomplish useful work in currents as strong as ___ knots with additional weights?

Answer 36

1.5 knots2.5 knots

Question 37

Free swimming Divers are severely handicapped by currents greater than ___ knot?

Answer 37

1.0 knot

Question 38

Cold Water Diving is defined as diving in water Temperatures ___ degrees F and colder?

Answer 38

37 degrees and colder

Question 39

Warm Water Diving is defined as dives that occur in water temperatures exceeding ___ degrees?

Answer 39

88 degrees

Question 40

At ___ degrees a resting diver will get chilled in 1-2 hrs?

Answer 40

80 degrees

Question 41

Air “D” tables and SS Helium-Oxygen tables are authorized for use up to ____ ft above sea level w/out correction and electronic UBA tables may be used up to ____ft w/out correction?

Answer 41

300 ft AIR/HeO21000 ft EUBA

Question 42

A minimum positive clearance of the keel to the bottom at mean low-water of ___ft must be established when diving below the bilge keel on surface ships or below the maximum beam on Subs.

Answer 42

6ft

Question 43

When is enclosed space diving authorized in SCUBA?

Answer 43

Enclosed space diving in scuba is strictly limited to saving human life, or saving/recovering items of such importance to warrant the risk of potential loss of life.

Question 44

What parts of the body are most vulnerable to pressure affects of an explosion?

Answer 44

Head, lungs, intestines.

Question 45

Difference between International maritime organization class 2 & class 3 for DP ships?

Answer 45

Both will maintain automatic or manual position and heading control under a specified maximum environmental conditions. Class 2 excludes the loss of a compartment. While Class 3 includes a loss of a compartment. Class 3 requires the two independent computer systems to be separated by a bulkhead.

Question 46

While Dive operations are in progress, DO vessel should not change heading more than___° at a time and movements will not exceed more than ___feet

Answer 46

5 degrees, 32ft

Question 47

Divers umbilicals should never be allowed to come within ___feet of the nearest thruster or propeller that is in a operating mode.

Answer 47

15ft

Question 48

The umbilicals should be attached along the stage wire at intervals of no greater than ___ft?

Answer 48

50

Question 49

Diver umbilicals shall be marked every ___ and at a point to identify distance to closest hazard based on the plan depth of the dive.

Answer 49

25’

Question 50

Standby’s “Max Shackle” allows for Standby to get within ___ft of the nearest hazard?

Answer 50

10ft

Question 51

The “Short Stay” is a shackle places ___ to ___ ft from the end of the umbilical?

Answer 51

6 to 8 feet

Question 52

If the DP vessel is using ___% power sustained to maintain position on station, discontinue diving operations?

Answer 52

65%

Question 53

Each diver breathing air source in service must be sampled approximately every ___ months (within the interval between __ and __ months following the last accomplishment), when contamination is suspected, and after system overhaul?

Answer 53

6 month with 4 to 8 month range.

Question 54

For Mk-16, repetitive dives with a PPO2 over 1.0 ata shall be limited to ___hrs a day and ___hrs a week?

Answer 54

4 hours a day, 16 hours a week.

Question 55

The EC-UBA decompression procedures may be used for diving at altitudes up to____ feet without modification?

Answer 55

1000 feet