Diving Equipment & Diving Signals OT2 1 08/02 Pathfinder Divers BSAC 0161 Diver Propulsion Vehicle...
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Transcript of Diving Equipment & Diving Signals OT2 1 08/02 Pathfinder Divers BSAC 0161 Diver Propulsion Vehicle...
Diving Equipment &
Diving Signals
Diving Equipment &
Diving Signals
OT2 108/02
Pathfinder Divers BSAC 0161Diver
Propulsion Vehicle
Diver Propulsion
Vehicle
Diver Propulsion Vehicle Diver Propulsion Vehicle
Operator & Maintainer CourseOperator & Maintainer Course
Dive Preparation,Dive Preparation,
Planning, Execution & EtiquettePlanning, Execution & Etiquette
Diver Propulsion Vehicle Diver Propulsion Vehicle
Operator & Maintainer CourseOperator & Maintainer Course
Dive Preparation,Dive Preparation,
Planning, Execution & EtiquettePlanning, Execution & Etiquette
Diving Equipment &
Diving Signals
Diving Equipment &
Diving Signals
OT2 208/02
Course AimsDiver
Propulsion Vehicle
Diver Propulsion
Vehicle
• Dive Preparation & PlanningDive Preparation & Planning
• Diving With A DPV [SeaScooter]Diving With A DPV [SeaScooter]
• SeaScooter HandlingSeaScooter Handling
• SeaScooter Dive Problems & HazardsSeaScooter Dive Problems & Hazards
• SeaScooter Etiquette SeaScooter Etiquette
Diving Equipment &
Diving Signals
Diving Equipment &
Diving Signals
OT2 308/02
Dive Preparation & PlanningDiver
Propulsion Vehicle
Diver Propulsion
Vehicle
Considerations Within The Dive OrganisationConsiderations Within The Dive Organisation
• Rule Of Thirds [Gauged Through Run Time]Rule Of Thirds [Gauged Through Run Time]
• Maximum Distance capableMaximum Distance capable
• Diver Air SupplyDiver Air Supply
• Diver No Stop TimeDiver No Stop Time
• Diver & SeaScooter M.O.D.sDiver & SeaScooter M.O.D.s
Diving Equipment &
Diving Signals
Diving Equipment &
Diving Signals
OT2 408/02
Dive Preparation & PlanningDiver
Propulsion Vehicle
Diver Propulsion
Vehicle
Considerations Within The Dive OrganisationConsiderations Within The Dive Organisation
• Rate of Descent/AscentRate of Descent/Ascent
• Dive Profile [Avoiding Saw Tooth]Dive Profile [Avoiding Saw Tooth]
• Pre-dive Preparation & Entry MethodsPre-dive Preparation & Entry Methods
• Buddy SystemBuddy System
• Propeller ObstructionsPropeller Obstructions
• Environmental ResponsibilitiesEnvironmental Responsibilities
Diving Equipment &
Diving Signals
Diving Equipment &
Diving Signals
OT2 508/02
Diving With A SeaScooterDiver
Propulsion Vehicle
Diver Propulsion
Vehicle
Pre-dive PreparationsPre-dive Preparations
• Ensure battery fully chargedEnsure battery fully charged
• Clean seals & O ringsClean seals & O rings
• Assemble & secure latchesAssemble & secure latches
• Test run [5 secs max]Test run [5 secs max]
• Lock triggerLock trigger
• Store upright Store upright
away from direct sunlightaway from direct sunlight
Diving Equipment &
Diving Signals
Diving Equipment &
Diving Signals
OT2 608/02
Diving With A SeaScooterDiver
Propulsion Vehicle
Diver Propulsion
Vehicle
Shore EntryShore Entry
• Gear up & secure machine [Lock Gear up & secure machine [Lock
trigger] in water/or carry trigger] in water/or carry
to mid waterto mid water
• When in deep water run vehicleWhen in deep water run vehicle
• Caution with silt/sand in shallowsCaution with silt/sand in shallows
Diving Equipment &
Diving Signals
Diving Equipment &
Diving Signals
OT2 708/02
Diving With A SeaScooterDiver
Propulsion Vehicle
Diver Propulsion
Vehicle
Boat EntryBoat Entry
• Kit up & crew hand SeaScooterKit up & crew hand SeaScooter
• Use floating line to retain Use floating line to retain
SeaScooter during kitting upSeaScooter during kitting up
Diving Equipment &
Diving Signals
Diving Equipment &
Diving Signals
OT2 808/02
Diving With A SeaScooterDiver
Propulsion Vehicle
Diver Propulsion
Vehicle
Surface UseSurface Use
• Use DSMBUse DSMB
• Use Bright coloured hoodUse Bright coloured hood
• Use StrobeUse Strobe
• Conserve gas/use snorkel only Conserve gas/use snorkel only
during calm conditionsduring calm conditions
• Maintain horizontal positionMaintain horizontal position
• Keep head below waterKeep head below water
Diving Equipment &
Diving Signals
Diving Equipment &
Diving Signals
OT2 908/02
Diving With A SeaScooterDiver
Propulsion Vehicle
Diver Propulsion
Vehicle
Underwater UseUnderwater Use
• Scooter close to buddyScooter close to buddy
• Clip SeaScooter to BC D RingClip SeaScooter to BC D Ring
for vertical descent/ascentsfor vertical descent/ascents
• Keep arms almost fully extendedKeep arms almost fully extended
• Maintain horizontal attitude Maintain horizontal attitude
with fins pointedwith fins pointed
• Maintain good B&T Maintain good B&T
Too buoyant [downward motion]Too buoyant [downward motion]
Too negative [upward motion]Too negative [upward motion]
• Slower SeaScooter to lead diveSlower SeaScooter to lead dive
• Fin kicking increases speedFin kicking increases speed
Diving Equipment &
Diving Signals
Diving Equipment &
Diving Signals
OT2 1008/02
Diving With A SeaScooterDiver
Propulsion Vehicle
Diver Propulsion
Vehicle
ManoeuvringManoeuvring
Pivot TurnsPivot Turns
• Hold SeaScooter far out & turnHold SeaScooter far out & turn
Banking TurnsBanking Turns
• Roll body in direction & lift noseRoll body in direction & lift nose
Tow Strap eases natural pivotTow Strap eases natural pivot
Diving Equipment &
Diving Signals
Diving Equipment &
Diving Signals
OT2 1108/02
Diving With A SeaScooterDiver
Propulsion Vehicle
Diver Propulsion
Vehicle
Riding TandemRiding Tandem
• Drains powerDrains power
• Both require excellent B&TBoth require excellent B&T
• Useful if buddys SeaScooter Useful if buddys SeaScooter fails fails
• Buddy may hold:Buddy may hold:
Pilot’s anklesPilot’s ankles
Calves below kneesCalves below knees
CylinderCylinder
First stage First stage [do not touch cylinder valve][do not touch cylinder valve]
Upper BC Upper BC
Use tow strapUse tow strap
Diving Equipment &
Diving Signals
Diving Equipment &
Diving Signals
OT2 1208/02
Diving With A SeaScooterDiver
Propulsion Vehicle
Diver Propulsion
Vehicle
Exit ProceduresExit Procedures
• Lock triggerLock trigger
• Secure SeaScooter to RIB, orSecure SeaScooter to RIB, or
hand inboard firsthand inboard first
• Remove SCUBA equipment Remove SCUBA equipment
• Retrieve SeaScooter if req’dRetrieve SeaScooter if req’d
Diving Equipment &
Diving Signals
Diving Equipment &
Diving Signals
OT2 1308/02
Diving With A SeaScooterDiver
Propulsion Vehicle
Diver Propulsion
Vehicle
Post-dive ProceduresPost-dive Procedures
• Freshwater Rinse & wipe dryFreshwater Rinse & wipe dry
• Recharge batteryRecharge battery
• Keep out of direct sunlightKeep out of direct sunlight
Diving Equipment &
Diving Signals
Diving Equipment &
Diving Signals
OT2 1408/02
Shelf or wall – Difficult to
control
descent
ascent
rates
Shot line Preferred Route – With Scooter non running
Check depth Check breathing gas Check octopus/AS Check buoyancy
Unclip Scooter/OK to continue/
Scooter & Avoid Saw Tooth Profile
Buoyancy control
Clear ears
Stay together
Clip Scooter to BC/ Okay to descend
SeaScooter Handling – DescentSeaScooter Handling – DescentDiver
Propulsion Vehicle
Diver Propulsion
Vehicle
Diving Equipment &
Diving Signals
Diving Equipment &
Diving Signals
OT2 1508/02
Stay togetherMonitor conditionsMonitor depth of planned dive & observe Scooter M.O.D.Monitor breathing gasMonitor buddy Keep to main dive planCaution with Scooter running distance - Separation procedure
If unhappy at any point - abort the dive Leave Scooter for CBL/AS unless highly experienced
SeaScooter Handling – The DiveSeaScooter Handling – The DiveDiver
Propulsion Vehicle
Diver Propulsion
Vehicle
Diving Equipment &
Diving Signals
Diving Equipment &
Diving Signals
OT2 1608/02
Signal OK to surface cover/Surface Scooter To Shore or Top Cover Boat/Unclip Scooter & recharge maintain
Signal OK to buddy
Stay together
Buoyancy control
Release triggers & stop motor/clip to BC/OK/UP
6m check depth
Controlled 1 min. ascent to surface
Buoyancy control
SeaScooter Handling – AscentSeaScooter Handling – AscentDiver
Propulsion Vehicle
Diver Propulsion
Vehicle
Caution with shelving wall ascent – Monitor ascent rate & consider deco levels
Preferred
ascent method
If Scootering on surface, inflate DSMB
Diving Equipment &
Diving Signals
Diving Equipment &
Diving Signals
OT2 1708/02
Dive Problems & HazardsDiver
Propulsion Vehicle
Diver Propulsion
Vehicle
Dealing With SeaScooter Vehicle Failure During DiveDealing With SeaScooter Vehicle Failure During Dive
• Caused By: Caused By:
Flooding [Becomes negatively buoyant]Flooding [Becomes negatively buoyant]
Propeller jamPropeller jam
• Actions:Actions:
Stop motor runningStop motor running
Clip scooter to BC D Ring & tow to entry pointClip scooter to BC D Ring & tow to entry point
Ride tandem [use DSMB on surface]Ride tandem [use DSMB on surface]
Use spare DSMB & send to surfaceUse spare DSMB & send to surface
Diving Equipment &
Diving Signals
Diving Equipment &
Diving Signals
OT2 1808/02
Dive Problems & HazardsDiver
Propulsion Vehicle
Diver Propulsion
Vehicle
Dealing With Runaway SeaScooter During DiveDealing With Runaway SeaScooter During Dive
• Caused By:Caused By:
Jammed triggerJammed trigger
Trigger malfunctionTrigger malfunction
• Actions:Actions:
Stop runaway [drive nose to solid surface, or bottom if Stop runaway [drive nose to solid surface, or bottom if safe to do so] – run down battery if 2/3 or more through safe to do so] – run down battery if 2/3 or more through divedive
Attempt to clear trigger jam, or jam propellerAttempt to clear trigger jam, or jam propeller
Attach to shotlineAttach to shotline
Look up check clear of divers, aim at surface & let goLook up check clear of divers, aim at surface & let go
Diving Equipment &
Diving Signals
Diving Equipment &
Diving Signals
OT2 1908/02
Dive Problems & HazardsDiver
Propulsion Vehicle
Diver Propulsion
Vehicle
Dealing With Strong Currents During DiveDealing With Strong Currents During Dive
• Scooter against current & return with currentScooter against current & return with current
• Consider distance to travel should SeaScooter failConsider distance to travel should SeaScooter fail
• Do not exceed planned dive parametersDo not exceed planned dive parameters
Diving Equipment &
Diving Signals
Diving Equipment &
Diving Signals
OT2 2008/02
Dive Problems & HazardsDiver
Propulsion Vehicle
Diver Propulsion
Vehicle
Planning Against Saw Tooth Profiles During DivePlanning Against Saw Tooth Profiles During Dive
• Be realistic & avoid over ambitious planningBe realistic & avoid over ambitious planning
• If penetrating wreck, leave SeaScooter to entry pointIf penetrating wreck, leave SeaScooter to entry point
Descend/AscendDescend/AscendDescend/AscendDescend/Ascend
Diving Equipment &
Diving Signals
Diving Equipment &
Diving Signals
OT2 2108/02
Dive Problems & HazardsDiver
Propulsion Vehicle
Diver Propulsion
Vehicle
Dealing With Out-Of-Air Emergency During DiveDealing With Out-Of-Air Emergency During Dive
• Danger – fast moving further apart:Danger – fast moving further apart:
Co-ordinate pre-dive with buddyCo-ordinate pre-dive with buddy
• Actions:Actions:
Get air to recipient & AscendGet air to recipient & Ascend
If both operators well trained – retain [clip to BC & If both operators well trained – retain [clip to BC & Prepare to discard during ascent] Prepare to discard during ascent]
On surface, if safe to do so – switch to snorkel & release On surface, if safe to do so – switch to snorkel & release DSMB during scooteringDSMB during scootering
Diving Equipment &
Diving Signals
Diving Equipment &
Diving Signals
OT2 2208/02
SeaScooter EtiquetteDiver
Propulsion Vehicle
Diver Propulsion
Vehicle
Diver Etiquette With The SeaScooterDiver Etiquette With The SeaScooter
SeaScooters have been banned in some areas due to lack of SeaScooters have been banned in some areas due to lack of common sense & inconsiderate usecommon sense & inconsiderate use
Minimise damage to environment & other divers by: Minimise damage to environment & other divers by:
• Use courtesy around other divers – maintain good distanceUse courtesy around other divers – maintain good distance
• Use minimal speed & wide turning arcsUse minimal speed & wide turning arcs
Diving Equipment &
Diving Signals
Diving Equipment &
Diving Signals
OT2 2308/02
SeaScooter EtiquetteDiver
Propulsion Vehicle
Diver Propulsion
Vehicle
Diver Etiquette With The SeaScooter [Cont’d]Diver Etiquette With The SeaScooter [Cont’d]
• Maintain good distance between SeaScooter Maintain good distance between SeaScooter & Wreck/Reef subject & Wreck/Reef subject
• Point fin blades uppermost & do not kick fins Point fin blades uppermost & do not kick fins close to bottom close to bottom
• Caution with prop wash stirring bottom Caution with prop wash stirring bottom
Diving Equipment &
Diving Signals
Diving Equipment &
Diving Signals
OT2 2408/02
SummaryDiver
Propulsion Vehicle
Diver Propulsion
Vehicle
• Factoring Within The Dive OrganisationFactoring Within The Dive Organisation
• Handling Safely During DivesHandling Safely During Dives
• Dealing With Hazards Encountered During DivesDealing With Hazards Encountered During Dives
• Consideration To Other Divers & The Environment Consideration To Other Divers & The Environment