New Castle Sailing Club

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New Castle Sailing Club

• Sail Training
• Tides, Currents, Moorings

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The Basics of Tides

• What are tides?
• The regular and predictable periodic variations
  in sea level on the Earth that correspond to
  changes in the relative positions of the Moon and
  the Sun
• What causes tides
• Gravity

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The Basics of Tides
Sun
Gravity
Gravity
The Moon
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Sun
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The Basics of Currents
What is Current?
The coherent horizontal movement of water
What creates Current?
Tidal Forces Wind Water temperature and salinity
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READING THE TIDE CURRENT CHART
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Delaware River at New Castle

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Practical Considerations (Current)

• Strategies for Light Air Sailing
• Plan The Direction of Your Sail!
• Sail Against the Current On Your Way Out
• Bring A Paddle
• Use Your Anchor If You Have To

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Mooring Terminology
Mooring Ball (or Buoy)
Chain
Mooring Pendant
Anchor
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Mooring Connections
clips to the Boat
The mooring pendant
The Painter
clips to the mooring
Chain to the Anchor
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Mooring Miscelleneous

• Dont forget.
• The Dinghy
• The Crew

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The Importance of Tides

• Departing
• Returning

Dinghy House
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Departing Returning (In Theory)

• Departing
• Row Out
• Rig Up
• Move Dinghy
• Un-Clip
• Sail Away

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Departing Returning (In Theory)

• Arriving
• Sail Up
• Clip On
• De-Rig
• Row In

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The Row Out

• Departing During Maximum Ebb

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Practical Considerations (Current)

• Departing During Maximum Ebb

Extra Credit Whats wrong with this picture?
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The Row Out

• Departing During Maximum Flood

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The Row Out

• Departing During Maximum Flood

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Practical Considerations (Current)

• Arriving During Maximum Flood

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Practical Considerations (Current)

• Arriving During Maximum Ebb

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Shooting The Mooring The Forces Involved

• Wind
• Current
• Boat Speed

Wind
Current
Boat Speed
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The Forces Involved

• The Interaction of Wind And Current
• Reinforce
• Oppose
• Deflect

Wind
Current
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The Forces Involved

• Identifying the Forces Involved
• (Returning)
• Boat Speed
• The Wind
• The Current?

Wind
Current
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The Forces Involved

• Identifying the Forces Involved
• (Departing)
• Wind
• Current
• Boat Speed

Wind
Current
Boat Speed
0
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The Forces Involved

• Identifying the Forces Involved
• (Departing)
• Wind
• Current
• Boat Speed

Wind
Current
Boat Speed
0
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The Forces Involved

• Returning
• Wind
• Current
• Boat Speed

Wind
Current
Boat Speed
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Departing

• The Row Out
• Rig Up
• Move the Dingy
• Un Clip
• Sail Away

Wind
Current
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Returning

• The Approach
• Slow Down!!
• Grab On
• CIip On
• De-rig

Wind
Current
Boat Speed
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Complications

• Departing

Current
Wind
Boat Speed ?
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Complications

• Departing

Current
Wind
Boat Speed ?
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Opposing Wind and Current

• When wind and current are opposing the boat can
  jibe around the mooring
• Avoid this situation by sailing off the mooring
  using the jib only, come head-to-wind and haul up
  the mainsail.

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Complications

• Departing

Wind
Current
Boat Speed ?
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Complications

• Departing

Wind
Current
The Beach
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Complications

• Returning

Wind
Current
Boat Speed
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Complications

• Returning

Wind
Boat Speed
Current
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Complications
Boat Speed

• Returning

Wind
Current
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Mooring Procedures

• Departing
• Make sure your dinghy is properly secured
• Dinghy location consider wind, current, shore
• Drift clear of the mooring and dinghy, using the
  jib to backwind and control direction. Reverse
  steer with tiller
• When current and wind are opposing, consider a
  jib only departure
• Avoid snagging the mooring and dinghy lines.
  Consider keeping centerboard in a partial down
  position

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Mooring Procedures

• Arriving
• Reduce speed but maintain control (lower jib if
  necessary)
• Be ready to lower jib and main (crank handy?),
  uncleat sheets
• Assign mooring crew to the bow
• Be ready to take another pass at the mooring if
  youre speed is too slow or too fast
• Mooring crew yells secure , sails come down,
  centerboard comes up.

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Questions?