ATON

Question 1

What is the most common type of lift bag used in ATON?

Answer 1

Open/Parachute

Question 2

What is the primary concern when bundling chain underway?

Answer 2

Make sure it doesnt drag.

Question 3

What are the primary considerations for top disconnect/reconnect?

Answer 3

Relieving staring on the split key and maintaining control of the chain/buoy.

Question 4

What is the minimum hose length for a fill whip.

Answer 4

15ft

Question 5

When bundling chain underwater, due to the difficulty of estimating distance underwater, its important to measure ______ of the chain, using a ________ prior to commencing the tow.

Answer 5

Depth. Depth gauge.

Question 6

What type of scuba cylinder is ideally suited for lift bag operations, and why?

Answer 6

Aluminum, because of their corrosion resistance.

Question 7

Where is data on chain weight located?

Answer 7

Data sheet 2.M.1 in the ATON Tech manual.

Question 8

What is used to pull the bitter end of a chain closer to the buoy bridle?

Answer 8

Fairlead.

Question 9

Where can information on ATON servicing history be located?

Answer 9

Federal Aid Information Document (FID)

Question 10

When towing an aid. The towline should be made off to the ________. Additionally a _______ may be the best choice given seastate.

Answer 10

Buoy hull or liftbag shackle, not the sinker. Pillow type.

Question 11

The sinker shall be replaced if the bail is worn to less than ________ of it’s original diameter.

Answer 11

½

Question 12

What equipment is required to perform a mooring inspection?

Answer 12

Calipers/Micrometer and a diver’s slate.

Question 13

Where are minimum chain measurements located?

Answer 13

ATON Tech manual. Table 2-12

Question 14

Inspection caliper/micrometer must be able to read _______ of an inch.

Answer 14

1/32

Question 15

The overpressure relief valve on the closed lift bag lifts at ________ over-bottom pressure.

Answer 15

3-7psi’

Question 16

Open or parachute lift bags range from ______ to ______lb capacity?

Answer 16

50-12,000

Question 17

_______ft = 1 fathom, _______ fathoms= 1 shot of chain.

Answer 17

6 15

Question 18

What is the first step in most ATON evolutions?

Answer 18

Attaching a short-stay to the sinker bail.

Question 19

AID SYSTEM COMPONENTS: Buoy.

Answer 19

Floating hull, appendages, and the chain bridle.

Question 20

AID SYSTEM COMPONENTS: Chain.

Answer 20

The length of chain from the bridle down to and including the pigtail. Includes the CHAFE which is most critical.

Question 21

AID SYSTEM COMPONENTS: Sinker.

Answer 21

Concrete weight and bail.

Question 22

For liftbag opoerations, what type of cylinder MAY be used? What type of cylinder is preferred?

Answer 22

ANY SCUBA cylinder may be used. Aluminum is preferred.

Question 23

What are two considerations when it comes to Rotten Stops?

Answer 23

Breaking strength and resistance to chafing.

Question 24

When is a line considered at short stay?

Answer 24

When no more line can be taken in, and the line pulls back sharply as the bow rises with the seas.

Question 25

What must be done prior to a mooring chain being disconnected from the sinker?

Answer 25

Divers must attach a line, accessible on surface, to the sinker bail.

Question 26

With good positioning data, divers may locate a sinker by using what?

Answer 26

Automated Aids Positioning System. (AAPS)

Question 27

AAPS has a tolerance of less than _____.

Answer 27

1 meter.

Question 28

Unless the dive team includes a qualified _______ the AAPS must be operated by the requesting unit.

Answer 28

Aids Positioning Tech.

Question 29

A split key is opened ____ to ____ degrees.

Answer 29

30-45

Question 30

Clear lines of communication between _____ and ____ are critical for safe live boating.

Answer 30

Dive supervisor and Coxswain.

Question 31

One way to mitigate risks of live boating, is to designate a ______.

Answer 31

Safe ascent points.

Question 32

A chain morning consists of 3 parts; At a minimum the ____ shall be inspected.

Answer 32

Riser, chafe, and bottom. The chafe must be inspected.

Question 33

Inspect the chafe for wear by measuring _____ of the most worn links.

Answer 33

the smallest parts.

Question 34

Any chain that is ____, ____, ____, or ___ SHALL be replaced.

Answer 34

deformed, stretched, bent, or twisted.

Question 35

ATON Battery Recovery | Up to a ______ yard safety area may be established and enforced by the CG.

Answer 35

1000 Yard.

Question 36

ATON Battery Recovery | Divers will search the bottom out to a radius of at least _____ around the center of the site.

Answer 36

50 yards.

Question 37

ATON Battery Recovery | Only batteries that are ____ or ____ shall be recovered.

Answer 37

On surface of the bottom or partially uncovered.

Question 38

ATON Battery Recovery | Any batteries that are ______ shall not be moved or uncovered. Report to the Dive Supervisor, and plot.

Answer 38

entirely buried.

Question 39

On deploying sinkers, who gives the command to deploy?

Answer 39

The dive supervisor.

Question 40

Primary considerations for completing a BOTTOM side disconnect:

Answer 40

Maintaining control of the aid once disconnected. | Marking the sinker if leaving the area.

Question 41

Primary considerations for a BOTTOM side RECONNECT

Answer 41

Deploy chain down shortstay to the sinker | Ensure divers are above the load.

Question 42

Lift-bag manufacturers design dump valves to vent as the load rises, provided the load is at least ___ percent of the bag’s rated lift capacity.

Answer 42

80%

Question 43

Concerning underwater rigging, a conventional rigging system consists of either a ____ inch diameter 6x37 wire rope, or a ___ inch diameter polyester rope.

Answer 43

3/4 inch | 1 inch

Question 44

The wire rope rigging system can handle a load up to ____lbs. The polyester line rigging can hoist a max load of ____ lbs.

Answer 44

10,000 | 5,000