Scuba Sup Flashcards
What is the normal working limit for scuba?
130fsw
What is the maximum working limit for scuba?
190fsw
What is the minimum equipment required for SCUBA?
- Fins
- knife
- Mask
- BC
- submersible pressure gauge
- Watch
- Tanks
-weights - Depth gauge
- Octopus (commanding officer)
What are the advantages to SCUBA?
- rapid deployability, portability, minimal support, minimal bottom disturbance, horizontal and vertical mobility.
SCUBA applications?
Shallow searches, inspections, light repair and recovery.
Disadvantages to scuba?
Limited endurance, limited protection, influenced by current, lack of voice comms.
Maximum current for scuba?
1 knot
Is standby required?
Yes.
When is small craft mandatory for SCUBA operations?
- open ocean diving.
- when untended
- when diving off large platform.
What is the minimum manning for SCUBA?
- Sup, tender, diver, standby
What does the first stage regulator do?
- reduce high pressure air from cylinders to intermediate pressure (over bottom).
What does the second stage regulator do?
- Reduces pressure from second stage.
At what PSI must a diver abort?
-500 psi for single bottle.
- 250psi for double bottles.
How often must SCUBA bottles be visually inspected?
- every 12 months
How often must SCUBA bottles be hydro?
- Every 5 years
What features does a BC need to have?
- able to provide 10 pounds of buoyancy.
- have jettisonable weights
- power inflator
- oral inflator
- over pressure relief valve.
How long should the buddy line be?
6-10 feet
What is the charging rate of SCUBA bottles?
- 400 wet, 200 dry
What are some communication methods of SCUBA?
- Slate, line pulls, hand signals
What emergency equipment should be present?
- AED
- First aid kit
- BVM
- spine board
- lost diver bouy
-portable oxygen
What are the three levels of chamber support?
Level 1- within 5 minutes
Level 2- within 1 hour
Level 3- within 6 hours
When should you give 5 rescue breaths
- when diver was found unconscious on the bottom
What is the length of a distance line?
10-100ft
What is the length of a buddy line?
6-10 feet
What is the RNT exception rule?
When the RNT is greater than the bottom time, you use the bottom time.
At what temperature does cold water diving start?
37 degrees
At what temperature does warm water diving start?
88 degrees
How often are hydrostatic test done on scuba bottles?
5 years
What triggers a vip?
- every 12 months
- when water or particulate is expected
What triggers a vip?
- every 12 months
- when water or particulate is expected
How many pieces of equipment are required for scuba diving and what are they?
- 10
- knife, mask, BCA, SCUBA, watch, depth gauge, weights, fins, octopus, and pressure gauge.
What is required when diving in currents greater then 1 knot?
-tending line and weights.
What is the minimum capacity scuba bottle authorized for primary air source?
- 50 cubic feet
What are suitable materials to make life lines from?
Nylon, Dacron, Polypropylene
What are three types of life lines?
Buddy Line, foot line, tending line
What is the definition of exceptional exposure?
When the risk of DCS and O2 toxicity and exposure to elements is greater then a normal dive. Requires approval with OPNAVINST 3150.27.
What’s the proper ascent rate?
30fsw or 20-40fsw
What do you do if your ascent rate is too fast?
Descend a couple feet and resume proper rate.
What chapter in the dive manual covers ORM?
Chapter 6
What chapter covers SCUBA diving?
Chapter 7
What chapter covers ice water diving?
Chapter 11
What are the DCS type 2 symptoms?
Neurological, inner ear staggers, cardio-pulmonary chokes.
At what depth will nitrogen narcosis likely begin?
- 130fsw
- prominent at 200fsw
What appendix for sonar distance?
- appendix 1A
