small boat diving
DESCRIPTION
Small Boat Diving. Objectives. Identify the following areas of the boat: Bow, stern, starboard side, port side List the minimum safety gear required by the USCG. Describe Procedures for launching and recovering a small boat from a beach. Outline concerns and procedures for anchoring. - PowerPoint PPT PresentationTRANSCRIPT
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Small Boat Diving
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Objectives• Identify the following areas of the boat:
– Bow, stern, starboard side, port side• List the minimum safety gear required by the
USCG.• Describe Procedures for launching and
recovering a small boat from a beach.• Outline concerns and procedures for anchoring.• Discuss techniques for entries and exits from a
small boat.• Describe techniques for diving in current.
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Main Topic Areas• Positives and negatives of small boat diving• Terminology• Safety Gear• Loading• Launching• Anchoring• Diving• Beach Landings• Emergency Procedures
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The Positives of Small Boat Diving
• Small boats are excellent dive platforms – Allow us to reach sites otherwise not easily
accessible. – Relatively economical.– Easily transported
• Successful small boat operation and diving requires: – Planning– Boating skills– Teamwork
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The Negatives of Small Boat Diving
• Crowded space• Possible sea sickness• Time consuming• Boat Issues
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Terminology
• Bow– Front of the boat
• Stern– Back of the boat
• Port side– Left side of the boat as you face forward
• Starboard– Right side of the boat as you face forward
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Safety Gear
• Determined by the size of the boat• USCG requirements
– USCG approved PFD for each passenger– “Throwable” PFD– Visual distress signals– Fire Extinguisher– Sound making device– Registration and hull numbers
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Safety Gear
• Nice to have– First aid kit– Tools– Radio or other communication equipment
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Loading
• Capacity Plate– Maximum number of passengers– Maximum total weight– Maximum size motor
• Keep all cargo organized– Individual soft/mesh bags for divers
• Keep the boat balanced
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Beach Launching
• Position the boat with the bow toward the water
• Locate the boat as close to the water as possible
• Time the sets to enter on the calm period– Follow the last wave and let the water do the
work– Get through the surf zone as quickly as
possible
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Beach Launching
• Hold the bow toward the waves– It may be necessary to paddle the boat away
from the beach• Once in deep enough water
– Lower the motor– Start the motor
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Anchoring• Ground tackle
– Anchor Line• Typically nylon for strength and flexibility
– Chain at the bottom• Protects against chafing• Acts as a shock absorber
• Anchor Type– Select the correct anchor for the bottom type
• Rock Anchor• Lightweight “Danforth” style
• Scope– Ration of Length of Anchor line deployed to depth of water
• 3:1 minimum• 5:1 preferred
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Anchoring
• Anchoring Drill– Allow plenty of room for swing– Make a test run.– Always lower the anchor. Never throw it.– Make sure the anchor is attached, but can
be slipped quickly.– Leave the engine running until you are sure
the anchor will hold.– Pull back on the anchor to set it.
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Anchoring
• Anchor bearings– Ranges to landmarks on the beach to
establish position– Compass bearing to landmarks on the beach
to establish position• Checking the anchor
– Upon descent check the anchor to make sure it is set.
– Prior to ascent, check the anchor to make sure it is clear to hoist.
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Anchoring
• Hoisting anchor– Motor slowly up to the anchor.– Hoist being careful of your back.
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Diving Procedures• Entry into the water
– Make sure the entry area is clear– Technique
• Backwards roll• Sit and slide
– Timing• Keep the boat balanced• Simultaneous entries from opposite sides• Alternate entries from opposite sides
– Equipment management• Avoid entanglement• Gear up completely in the boat• Don your gear in the water
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Diving Procedures
• Exit from the water into the boat– Technique
• Ladder• Over the side
– It may be necessary to enter over the stern of the boat» May be lower or more stable
– Equipment Management• Do not remove any equipment until you are in contact with
the boat.• Attach equipment to gear lines or have another diver hold
onto the gear• Properly stow the gear as soon as you are in the boat.
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Diving Procedures
• Current– Begin dive into any current– Deploy a current line for diver retrieval– Allow for the effects of current on air
consumption– Use the anchor line for safety stops
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Diving Procedures
• Liveboating– Is vessel maneuverable enough?– Is prop a hazard.– Most boats drift bow down.– Entering the water
• Divers should exit the boat on the windward side– Pick up
• Windward vs. Leeward side
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Beach Landings
• Stop in deep water as close to the surf zone as possible.
• Raise the motor• Time the exit to follow the last wave of the set
– Divers are in the water ready to drag the boat up the beach
• Boat orientation– Bow toward the beach– Stern toward the beach
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Emergency Procedures
• Recall Procedures– Recall Signal
• Racing motor• Banging metal together underwater
– Diver Response• Make a safe ascent• Look to boat for signals
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Emergency Procedures• Radio protocols
– VHF Channel 16 is the emergency channel– Levels of emergency
• MAYDAY– Vessel is in imminent danger
• PAN (pronounced PAHN)– Potentially life threatening situation
» Overdue or missing divers» Man overboard» DCS or AGE
• SECURITE (pronounced SAY-CUR-EE-TAY)– Hazards
» Safety» Navigation» Weather
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Emergency Procedures
– Info to transmit• Location• Boat identification• Type of emergency
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Emergency Procedures
• Rescues– Strip gear prior to entering the boat– Enter at the most stable part of the boat
• May be over the stern of the boat– Inflatable Boats
• May have to partially deflate a pontoon
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Main Topic Areas• Positives and negatives of small boat diving• Terminology• Safety Gear• Loading• Launching• Anchoring• Diving• Beach Landings• Emergency Procedures
![Page 26: Small Boat Diving](https://reader034.vdocuments.us/reader034/viewer/2022051317/5681634d550346895dd3e583/html5/thumbnails/26.jpg)
Objectives• Identify the following areas of the boat:
– Bow, stern, starboard side, port side• List the minimum safety gear required by the
USCG.• Describe Procedures for launching and
recovering a small boat from a beach.• Outline concerns and procedures for anchoring.• Discuss techniques for entries and exits from a
small boat.• Describe techniques for diving in current.
![Page 27: Small Boat Diving](https://reader034.vdocuments.us/reader034/viewer/2022051317/5681634d550346895dd3e583/html5/thumbnails/27.jpg)
Summary
• Proper utilization of small boats will significantly extend the range of your diving operations.
• Successful small boat diving operations calls for proper planning, boating and diving skills and teamwork.