BSAC SPORTS DIVER THEORY
QUESTIONS AND ANSWERS WITH
VERIFIED SOLUTIONS 100% CORRECT
RATED A+ NEWLY UPDATED 2025
Q: Under what conditions can a Sports Diver buddy with an Ocean Diver or
another Sports Diver?
✔✔ Only in environments that the Ocean Diver has previously trained in, and
always under the oversight of a qualified Dive Manager.
Q: What is the starting depth limit for a newly qualified Sports Diver?
✔✔ 20 meters (initial maximum until further experience is gained).
Q: What is the maximum depth a Sports Diver can reach after gradual
experience increases?
✔✔ Up to 35 meters, once progression requirements are completed.
Q: Is a neap tide considered large or small?
✔✔ Small — it has a lower tidal range.
Q: Is a spring tide large or small in comparison?
✔✔ Large — it produces a higher tidal range.
Q: What astronomical alignment causes a neap tide?
✔✔ When the Moon is at a right angle to the Earth and Sun (during the first and
third quarters), reducing the combined gravitational pull and resulting in weaker
tides.
,Q: What causes spring tides to occur?
✔✔ When the Sun and Moon align (during full and new moons), their gravitational
forces combine, leading to stronger tidal movements.
Q: During which lunar phases do neap tides happen?
✔✔ Around the first and third quarters of the Moon.
Q: During which lunar phases do spring tides happen?
✔✔ During the new moon and full moon phases.
Q: What is the typical time between high and low tides in most coastal areas?
✔✔ About 12 hours — making a full tide cycle.
Q: How many complete tide cycles usually occur in one day?
✔✔ Two full tide cycles every 24 hours.
Q: How many high tides are there each day?
✔✔ Usually two high tides.
Q: How many low tides happen daily?
✔✔ Typically two low tides.
Q: How often do spring tides occur in a lunar month?
✔✔ Twice per lunar month (at the new and full moons).
Q: How many times do neap tides happen each lunar month?
✔✔ Also twice, during the moon’s quarter phases.
, Q: What does the tidal range refer to?
✔✔ It’s the difference in height between high tide and low tide.
Q: What is slack water?
✔✔ The period during tide change when the current slows or stops, often offering
the calmest water conditions.
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
- 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
QUESTIONS AND ANSWERS WITH
VERIFIED SOLUTIONS 100% CORRECT
RATED A+ NEWLY UPDATED 2025
Q: Under what conditions can a Sports Diver buddy with an Ocean Diver or
another Sports Diver?
✔✔ Only in environments that the Ocean Diver has previously trained in, and
always under the oversight of a qualified Dive Manager.
Q: What is the starting depth limit for a newly qualified Sports Diver?
✔✔ 20 meters (initial maximum until further experience is gained).
Q: What is the maximum depth a Sports Diver can reach after gradual
experience increases?
✔✔ Up to 35 meters, once progression requirements are completed.
Q: Is a neap tide considered large or small?
✔✔ Small — it has a lower tidal range.
Q: Is a spring tide large or small in comparison?
✔✔ Large — it produces a higher tidal range.
Q: What astronomical alignment causes a neap tide?
✔✔ When the Moon is at a right angle to the Earth and Sun (during the first and
third quarters), reducing the combined gravitational pull and resulting in weaker
tides.
,Q: What causes spring tides to occur?
✔✔ When the Sun and Moon align (during full and new moons), their gravitational
forces combine, leading to stronger tidal movements.
Q: During which lunar phases do neap tides happen?
✔✔ Around the first and third quarters of the Moon.
Q: During which lunar phases do spring tides happen?
✔✔ During the new moon and full moon phases.
Q: What is the typical time between high and low tides in most coastal areas?
✔✔ About 12 hours — making a full tide cycle.
Q: How many complete tide cycles usually occur in one day?
✔✔ Two full tide cycles every 24 hours.
Q: How many high tides are there each day?
✔✔ Usually two high tides.
Q: How many low tides happen daily?
✔✔ Typically two low tides.
Q: How often do spring tides occur in a lunar month?
✔✔ Twice per lunar month (at the new and full moons).
Q: How many times do neap tides happen each lunar month?
✔✔ Also twice, during the moon’s quarter phases.
, Q: What does the tidal range refer to?
✔✔ It’s the difference in height between high tide and low tide.
Q: What is slack water?
✔✔ The period during tide change when the current slows or stops, often offering
the calmest water conditions.
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
- 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
