BSAC SPORTS DIVER THEORY 190
QUESTIONS & ANSWERS WITH
GUARANTEED PASS!!
What's the tidal range? - ANSWER ✔✔- High water - low water
What's slack water? - ANSWER ✔✔- At the tides turning point, when
the water speed is at its slowest.
What can make diving on a static site (e.g. a wreck) safer? - ANSWER
✔✔- Diving in slack water
What is ground swell? - ANSWER ✔✔- When wind causing wave
action on the surface can be felt on the sea bed.
When is ground swell the roughest? - ANSWER ✔✔- When the surface
winds go against the tide/stream/current flow.
Is an incoming or outgoing tide better for visibility? - ANSWER ✔✔-
Incoming
What are five factors that can affect visibility? - ANSWER ✔✔- - bad
weather
- tides
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,- being close to river estuaries
- lots of phytoplankton + zooplankton (most likely to be a problem in
spring in most places.)
-disturbance by divers.
What's a thermocline? - ANSWER ✔✔- Sudden change in temperature,
may look oily/ shiny and produce a change in visibility
What can you do to reduce the effect of glare on the surface (as a boat
crew member, not a diver?) - ANSWER ✔✔- - wear polarised
sunglasses
- position the boat with the sun behind you
What are four things you should take into account when doing a risk
assessment? - ANSWER ✔✔- Conditions, depth, breathing gas and
equipment
As neoprene wetsuits compress, there is a loss of what? - ANSWER
✔✔- Thermal insulation
What precautions can you take to minimise the risk of a dive to yourself
and your buddy? - ANSWER ✔✔- -don't dive if you're unsure
- service equipment
- back up supply of gas
- pre agreed narcosis check (at agreed depth or gas level)
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, - practiced rescue skills
-
What are the four practised rescue skills you'll do as a sports diver? -
ANSWER ✔✔- CBL/AS, basic life support (BLS), rescue breathing
(RB), chest compressions (CC)
What's the in water life support sequence? (6) - ANSWER ✔✔- - make
bouyant
- shout for help
- extend airway
- give 1 minute RB's
- tow to shore or RB while waiting for boat
- de-kit and land/recover
What does IPO stand for? - ANSWER ✔✔- Immersion Pulmonary
Oedema
What can IPO be confused with? - ANSWER ✔✔- Drowning, as both
involve fluid in the lungs.
What's the difference between IPO and pulmonary oedema? - ANSWER
✔✔- IPO = PO but when in water
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QUESTIONS & ANSWERS WITH
GUARANTEED PASS!!
What's the tidal range? - ANSWER ✔✔- High water - low water
What's slack water? - ANSWER ✔✔- At the tides turning point, when
the water speed is at its slowest.
What can make diving on a static site (e.g. a wreck) safer? - ANSWER
✔✔- Diving in slack water
What is ground swell? - ANSWER ✔✔- When wind causing wave
action on the surface can be felt on the sea bed.
When is ground swell the roughest? - ANSWER ✔✔- When the surface
winds go against the tide/stream/current flow.
Is an incoming or outgoing tide better for visibility? - ANSWER ✔✔-
Incoming
What are five factors that can affect visibility? - ANSWER ✔✔- - bad
weather
- tides
1|Page
,- being close to river estuaries
- lots of phytoplankton + zooplankton (most likely to be a problem in
spring in most places.)
-disturbance by divers.
What's a thermocline? - ANSWER ✔✔- Sudden change in temperature,
may look oily/ shiny and produce a change in visibility
What can you do to reduce the effect of glare on the surface (as a boat
crew member, not a diver?) - ANSWER ✔✔- - wear polarised
sunglasses
- position the boat with the sun behind you
What are four things you should take into account when doing a risk
assessment? - ANSWER ✔✔- Conditions, depth, breathing gas and
equipment
As neoprene wetsuits compress, there is a loss of what? - ANSWER
✔✔- Thermal insulation
What precautions can you take to minimise the risk of a dive to yourself
and your buddy? - ANSWER ✔✔- -don't dive if you're unsure
- service equipment
- back up supply of gas
- pre agreed narcosis check (at agreed depth or gas level)
2|Page
, - practiced rescue skills
-
What are the four practised rescue skills you'll do as a sports diver? -
ANSWER ✔✔- CBL/AS, basic life support (BLS), rescue breathing
(RB), chest compressions (CC)
What's the in water life support sequence? (6) - ANSWER ✔✔- - make
bouyant
- shout for help
- extend airway
- give 1 minute RB's
- tow to shore or RB while waiting for boat
- de-kit and land/recover
What does IPO stand for? - ANSWER ✔✔- Immersion Pulmonary
Oedema
What can IPO be confused with? - ANSWER ✔✔- Drowning, as both
involve fluid in the lungs.
What's the difference between IPO and pulmonary oedema? - ANSWER
✔✔- IPO = PO but when in water
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