BSAC Ocean diver UPDATED ACTUAL Questions and CORRECT Answers
Elected commitee Diving officer
Training officer
Chairperson
Treasurer
Secretary
Equipment officer
Branches vs BSAC centres Branches = local club (around 1000 branches around UK and overseas), BSAC
centre are training centres i.e. professional diving schools
BSAC organisation structure BSAC President, BSAC Council, National Diving Committee, Regional Coaching
Team - BSAC council made up of elected members who manage BSAC for
members - NDC members appointed for expertise - all unpaid volunteers
Ocean diver aim Dive in open water to 20m under supervision of a dive manager in controlled
conditions.
Discovery diver aim 12m depth under direct in water supervision of a dive leader
BSAC council committee that manages bsac on behalf of the members
Atmospheric pressure Weight of 1 cm square column of air is 1 kg at sea level - - i.e. 1 bar at sea level
Water pressure Water column with area of 1cm2 exerts downwards pressure of 1 bar for every 10
metres
How to measure water pressure Depth gauges, gives reading in metres
, 10m water pressure and total pressure is 1 bar water pressure and 1 bar atmospheric pressure = 2 bar total pressure
20m water pressure and total pressure is 2 bar water pressure and 1 bar atmospheric pressure = 3 bar total pressure
Effect of pressure on air spaces 2 bar, volume of air is halved. 3 bar reduces to 1 third original volume. 4 bar
reduces to one quarter original volume
Body water content 80 per cent
Mask Rigid mask frame
Tempered glass
Flexible seal of silicone rubber
Wash your mask in fresh water after each dive - avoid drying in direct sun as can
affect flexibility of silicone rubber
Fins Either shoe fin with foot pocket (in warm conditions) or strap fin (over boots, with
strap or spring to keep in place) - wash in fresh water and dry standing on food
pocket end
SCUBA acronym self contained underwater breathing apparatus
Scuba equipment Cylinder
Buoyancy Compensator
Regulator
Cylinder working pressures 232/300 bar
Cylinder material Aluminium/steel
Must conform to PRESSURE EQUIPMENT DIRECTIVE (bears the CE mark)
Type of gas it contains will be written on it
SCUBA cylinder testing Visual check every 2.5 years
Hydrostatic test every 5 years
Cylinder care Wash in fresh water
Store cylinder upright
Nitrox 32 mix/Nitrogen 36 mix/air 32 - 32% oxygen and 68% nitrogen
36 - 36% O and 64% N
Air - 21% O and 79% N
Marking - WC how many litres of water the cylinder could hold
WP or CP Working pressure - 232 bar or 300 bar
TP Test pressure - used during hydraulic test
CP Charging pressure
Elected commitee Diving officer
Training officer
Chairperson
Treasurer
Secretary
Equipment officer
Branches vs BSAC centres Branches = local club (around 1000 branches around UK and overseas), BSAC
centre are training centres i.e. professional diving schools
BSAC organisation structure BSAC President, BSAC Council, National Diving Committee, Regional Coaching
Team - BSAC council made up of elected members who manage BSAC for
members - NDC members appointed for expertise - all unpaid volunteers
Ocean diver aim Dive in open water to 20m under supervision of a dive manager in controlled
conditions.
Discovery diver aim 12m depth under direct in water supervision of a dive leader
BSAC council committee that manages bsac on behalf of the members
Atmospheric pressure Weight of 1 cm square column of air is 1 kg at sea level - - i.e. 1 bar at sea level
Water pressure Water column with area of 1cm2 exerts downwards pressure of 1 bar for every 10
metres
How to measure water pressure Depth gauges, gives reading in metres
, 10m water pressure and total pressure is 1 bar water pressure and 1 bar atmospheric pressure = 2 bar total pressure
20m water pressure and total pressure is 2 bar water pressure and 1 bar atmospheric pressure = 3 bar total pressure
Effect of pressure on air spaces 2 bar, volume of air is halved. 3 bar reduces to 1 third original volume. 4 bar
reduces to one quarter original volume
Body water content 80 per cent
Mask Rigid mask frame
Tempered glass
Flexible seal of silicone rubber
Wash your mask in fresh water after each dive - avoid drying in direct sun as can
affect flexibility of silicone rubber
Fins Either shoe fin with foot pocket (in warm conditions) or strap fin (over boots, with
strap or spring to keep in place) - wash in fresh water and dry standing on food
pocket end
SCUBA acronym self contained underwater breathing apparatus
Scuba equipment Cylinder
Buoyancy Compensator
Regulator
Cylinder working pressures 232/300 bar
Cylinder material Aluminium/steel
Must conform to PRESSURE EQUIPMENT DIRECTIVE (bears the CE mark)
Type of gas it contains will be written on it
SCUBA cylinder testing Visual check every 2.5 years
Hydrostatic test every 5 years
Cylinder care Wash in fresh water
Store cylinder upright
Nitrox 32 mix/Nitrogen 36 mix/air 32 - 32% oxygen and 68% nitrogen
36 - 36% O and 64% N
Air - 21% O and 79% N
Marking - WC how many litres of water the cylinder could hold
WP or CP Working pressure - 232 bar or 300 bar
TP Test pressure - used during hydraulic test
CP Charging pressure
