BSAC Ocean diver || with Certified Answers.
Elected commitee correct answers Diving officer
Training officer
Chairperson
Treasurer
Secretary
Equipment officer
Branches vs BSAC centres correct answers Branches = local club (around 1000 branches around
UK and overseas), BSAC centre are training centres i.e. professional diving schools
BSAC organisation structure correct answers 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 correct answers Dive in open water to 20m under supervision of a dive manager
in controlled conditions.
Discovery diver aim correct answers 12m depth under direct in water supervision of a dive
leader
BSAC council correct answers committee that manages bsac on behalf of the members
Atmospheric pressure correct answers Weight of 1 cm square column of air is 1 kg at sea level - -
i.e. 1 bar at sea level
Water pressure correct answers Water column with area of 1cm2 exerts downwards pressure of 1
bar for every 10 metres
,How to measure water pressure correct answers Depth gauges, gives reading in metres
10m water pressure and total pressure is correct answers 1 bar water pressure and 1 bar
atmospheric pressure = 2 bar total pressure
20m water pressure and total pressure is correct answers 2 bar water pressure and 1 bar
atmospheric pressure = 3 bar total pressure
Effect of pressure on air spaces correct answers 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 correct answers 80 per cent
Mask correct answers 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 correct answers 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 correct answers self contained underwater breathing apparatus
Scuba equipment correct answers Cylinder
Buoyancy Compensator
Regulator
, Cylinder working pressures correct answers 232/300 bar
Cylinder material correct answers 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 correct answers Visual check every 2.5 years
Hydrostatic test every 5 years
Cylinder care correct answers Wash in fresh water
Store cylinder upright
Nitrox 32 mix/Nitrogen 36 mix/air correct answers 32 - 32% oxygen and 68% nitrogen
36 - 36% O and 64% N
Air - 21% O and 79% N
Marking - WC correct answers how many litres of water the cylinder could hold
WP or CP correct answers Working pressure - 232 bar or 300 bar
TP correct answers Test pressure - used during hydraulic test
CP correct answers Charging pressure
Nitrox cylinders correct answers Need to be in Oxygen service - oxygen compatible parts in
valves and need periodic cleaning to ensure no hydrocarbons present (recommended every 15
months)
Elected commitee correct answers Diving officer
Training officer
Chairperson
Treasurer
Secretary
Equipment officer
Branches vs BSAC centres correct answers Branches = local club (around 1000 branches around
UK and overseas), BSAC centre are training centres i.e. professional diving schools
BSAC organisation structure correct answers 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 correct answers Dive in open water to 20m under supervision of a dive manager
in controlled conditions.
Discovery diver aim correct answers 12m depth under direct in water supervision of a dive
leader
BSAC council correct answers committee that manages bsac on behalf of the members
Atmospheric pressure correct answers Weight of 1 cm square column of air is 1 kg at sea level - -
i.e. 1 bar at sea level
Water pressure correct answers Water column with area of 1cm2 exerts downwards pressure of 1
bar for every 10 metres
,How to measure water pressure correct answers Depth gauges, gives reading in metres
10m water pressure and total pressure is correct answers 1 bar water pressure and 1 bar
atmospheric pressure = 2 bar total pressure
20m water pressure and total pressure is correct answers 2 bar water pressure and 1 bar
atmospheric pressure = 3 bar total pressure
Effect of pressure on air spaces correct answers 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 correct answers 80 per cent
Mask correct answers 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 correct answers 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 correct answers self contained underwater breathing apparatus
Scuba equipment correct answers Cylinder
Buoyancy Compensator
Regulator
, Cylinder working pressures correct answers 232/300 bar
Cylinder material correct answers 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 correct answers Visual check every 2.5 years
Hydrostatic test every 5 years
Cylinder care correct answers Wash in fresh water
Store cylinder upright
Nitrox 32 mix/Nitrogen 36 mix/air correct answers 32 - 32% oxygen and 68% nitrogen
36 - 36% O and 64% N
Air - 21% O and 79% N
Marking - WC correct answers how many litres of water the cylinder could hold
WP or CP correct answers Working pressure - 232 bar or 300 bar
TP correct answers Test pressure - used during hydraulic test
CP correct answers Charging pressure
Nitrox cylinders correct answers Need to be in Oxygen service - oxygen compatible parts in
valves and need periodic cleaning to ensure no hydrocarbons present (recommended every 15
months)
