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1 and done. > ATON > Flashcards

ATON Flashcards

1
Q

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

A

Open/Parachute

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2
Q

What is the primary concern when bundling chain underway?

A

Make sure it doesnt drag.

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3
Q

What are the primary considerations for top disconnect/reconnect?

A

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

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4
Q

What is the minimum hose length for a fill whip.

A

15ft

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5
Q

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.

A

Depth. Depth gauge.

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6
Q

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

A

Aluminum, because of their corrosion resistance.

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7
Q

Where is data on chain weight located?

A

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

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8
Q

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

A

Fairlead.

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9
Q

Where can information on ATON servicing history be located?

A

Federal Aid Information Document (FID)

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10
Q

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

A

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

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11
Q

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

A

½

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12
Q

What equipment is required to perform a mooring inspection?

A

Calipers/Micrometer and a diver’s slate.

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13
Q

Where are minimum chain measurements located?

A

ATON Tech manual. Table 2-12

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14
Q

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

A

1/32

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15
Q

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

A

3-7psi’

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16
Q

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

A

50-12,000

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17
Q

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

A

6 15

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18
Q

What is the first step in most ATON evolutions?

A

Attaching a short-stay to the sinker bail.

19
Q

AID SYSTEM COMPONENTS: Buoy.

A

Floating hull, appendages, and the chain bridle.

20
Q

AID SYSTEM COMPONENTS: Chain.

A

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

21
Q

AID SYSTEM COMPONENTS: Sinker.

A

Concrete weight and bail.

22
Q

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

A

ANY SCUBA cylinder may be used. Aluminum is preferred.

23
Q

What are two considerations when it comes to Rotten Stops?

A

Breaking strength and resistance to chafing.

24
Q

When is a line considered at short stay?

A

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

25
Q

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

A

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

26
Q

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

A

Automated Aids Positioning System. (AAPS)

27
Q

AAPS has a tolerance of less than _____.

A

1 meter.

28
Q

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

A

Aids Positioning Tech.

29
Q

A split key is opened ____ to ____ degrees.

A

30-45

30
Q

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

A

Dive supervisor and Coxswain.

31
Q

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

A

Safe ascent points.

32
Q

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

A

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

33
Q

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

A

the smallest parts.

34
Q

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

A

deformed, stretched, bent, or twisted.

35
Q

ATON Battery Recovery

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

A

1000 Yard.

36
Q

ATON Battery Recovery

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

A

50 yards.

37
Q

ATON Battery Recovery

Only batteries that are ____ or ____ shall be recovered.

A

On surface of the bottom or partially uncovered.

38
Q

ATON Battery Recovery

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

A

entirely buried.

39
Q

On deploying sinkers, who gives the command to deploy?

A

The dive supervisor.

40
Q

Primary considerations for completing a BOTTOM side disconnect:

A

Maintaining control of the aid once disconnected.

Marking the sinker if leaving the area.

41
Q

Primary considerations for a BOTTOM side RECONNECT

A

Deploy chain down shortstay to the sinker

Ensure divers are above the load.

42
Q

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.

A

80%

43
Q

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

A

3/4 inch

1 inch

44
Q

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

A

10,000

5,000

1 and done. (22 decks)

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