Open Water Manual
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[pic 1]TABLE OF CONTENTSAcademic Training Session #1 2 Diving Equipments 2-6 The Air We Breathe 6-8Academic Training Session #2 9 Physics of Diving 9-10 The Buddy System 11-12 The Diving Environment 13-14 Managing Problems U/W 14-16 Health & Fitness for Diving 16 Academic Training Session #3 17 Dive Tables & Dive Planning 17-20 Flying after Diving 20 Decompression Sickness 20-23The 10 Golden Rules 24LOG BOOK 25-64ACADEMIC TRAINING SESSION #1DIVING EQUIPMENTS[pic 2]AIR TANKThe central piece of equipment which makes scuba diving possible. Contains the compressed breathing air that allows you to breathe underwater. Material is commonly aluminum or steel Sizes are usually 8 – 12 liters (internal volume)Main part is the tank valve with O-ring and burst disc.Filled up to 3000psi or 200barsRemember: Check O-ring before using the tankUsed tanks must be left with some air to keep dirt from entering the tank.BUOYANCY CONTROL DEVICE- BCDGives scuba divers the ability to adjust and control his/her buoyancy.Allows the diver to achieve neutral buoyancy (remain at a constant depth) or to descend or ascend in a control way.Also known as buoyancy compensator.Features: Low pressure hose connectorInflator and deflator mechanismsRelief valveRapid exhaust valvesOral inflation of the BCDQuick release bucklesPockets, straps, hose keepersSizes: XS, S, M, S/M, M, L, M/L, L, XL, XXLRemember: Fully inflate on the surface to establish positive buoyancy and relax.Deflate fully during descent.Wash inside and out and hang partially inflated.
REGULATORAdjusts the pressure of the air in your tank to the pressure needed for breathing and supplies it to you through the demand valve when you inhale.First and second stages of the regulator.Main regulator and alternate air source or octopus.Low pressure hose- connect to BCDHigh pressure hose- submersible pressure gauge (SPG) console which includes a depth gauge, UW compass, or dive computer.Remember: Dry and replace the dust cap before washing!WETSUITCan be a full length wetsuit, a shorty with hoods or jackets.Made up of neoprene rubber and varies in thickness 2mm, 3mm, 5mm, 7mm.Used as thermal protection, protection from injuries and abrasions from contact with marine organisms and sharp objects. Should not be loose or too tightHave zippers and rubberized portions.Remember: Tight wetsuit pressing on the carotid artery of the neck can deprive the brain of blood supply which carries oxygen.MASKTempered glass materialBrush each inner glass for 5mins before using a brand new mask to prevent fogging.Good fit is when it gets stuck in the face when holding sucked air.Clear and dark skirts of the mask affect visibility underwater.Check your field of vision.Remember:Lung volume is much bigger than the artificial air space in the mask therefore clearing a mask is very easy!Loosen the straps and position the mask around the neck when not in use- for securing your mask.Prepare the mask by getting a comfortable fit before diving.Pull the straps backwards at both sides together.SNORKELOptional to use, needed only for long surface swim.Remember:Keep snorkel on left side so as not to interfere with the regulator coming from the right side.Use snorkel with not so long tube to avoid CO2 induced headache.FINSCombined plastic and rubber material.Used for propulsion by flutter kicking.Parts are the blades, pockets, straps, and quick releases buckles.2-types: open heel & full footRemember:Loosen straps on both sides before diving.Pull both straps backwards together to tighten.Last equipment to put on and last equipment to remove during water entries and exits!KNIFEA tool not a weapon.U/W LIGHTS OR TORCHEach diver must have a primary light and one back up light in a buddy team.