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Anchors Ropes and Knots

Anchors Ropes and Knots. We will cover. Anchor Types Anchoring Procedure Anchoring Rope Types, Composition and Strength Shot Lines Lazy Lines Knot Types and Uses. Types of Anchor CQR (Coastal Quick Release). Recommended - seaweed and grass but is heavy

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Anchors Ropes and Knots

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  1. Anchors Ropes and Knots

  2. We will cover • Anchor Types • Anchoring Procedure • Anchoring • Rope Types, Composition and Strength • Shot Lines • Lazy Lines • Knot Types and Uses

  3. Types of AnchorCQR (Coastal Quick Release) • Recommended- seaweed and grass but is heavy • Not recommended - hard sand, rocky seabed

  4. Types of AnchorDanforth (Fluke Anchor) • Recommended- burying anchor, soft sand and mud • Not recommended – seaweed, hard sand, rocky seabed

  5. Types of AnchorGrappling or Folding • Recommended- hard sand, rocky seabed • Not recommended – soft sand, clay and mud

  6. Types of AnchorAdmiralty pattern • Recommended- rocky seabed, kelp and grass • Not recommended – soft sand, clay and mud

  7. Types of AnchorBruce (Claw) • Recommended- rocky seabed, kelp and grass • Not recommended – seaweed and grass

  8. Anchoring Procedure • Ready Anchor • Head into wind - tide - swell • Put engine in neutral • Deploy Anchor • Allow boat to drift back • On reaching bottom pay out more rope to decrease angle of shaft

  9. Anchoring Procedure • 3-4 times the depth gives stable holding. • Upon resistance - give tug to dig anchor in • Check for drift • Secure anchor line to boat • Buoy anchor line • Stop engine

  10. Anchoring

  11. Hauling Anchor(Weighing) • Start engine - leave in neutral • Untie line from yoke • Haul on rope till resistance gives • When line goes tight give sharp pull to dislodge anchor • If stuck - motor boat around and try again. • When anchor is recovered - stow away neatly

  12. Sea-Anchor Direction of drift Sea-Anchor Dimensions Large End is 1" for every 1' of boat length Line is 3 times boat length Tripping line Dramatically Slows Down Drift Gives Stability

  13. Rope Types • Natural • Manila • Sisal • Hemp • Man-Made • Nylon • Polyester • Polypropylene • Wire or Spun Steel

  14. Rope Composition • Spun or Hawser Laid • Braided

  15. Rope Strength • Strength is based on theSafe Working Load (SWL) of the rope • Points of note: • Knots reduce strength by 50% • Splicing reduces strength by 12% • Natural rope loses 50% of its strength when SATURATED

  16. Handling Rope • Keep rope tidy and tangle free • Stow away carefully(Coiled properly and ready for instant use)

  17. Shot Lines Used for marking area of special interest e.g. Wreck or Test Area Large Buoy (50 Litres) Keep Straight As Possible Heavy Weight 25 Kgs +

  18. Lazy Lines Usually dropped over side of boat marking decompression stops 3m 6m 9m

  19. KnotsBasic Terms for Knot Forming Standing Part Bitter End Bight

  20. KnotsClove Hitch • Use – For quickly securing a line

  21. KnotsRound Turn and Two Half Hitches Half hitch • Use - Also for securing a line • Advantage that it can be undone under strain

  22. KnotsReef Knot • Use - For joining ropes together of equal thickness • Can open if strain is released

  23. KnotsSheet Bend • Use - For joining ropes together of unequal thickness • More secure than a Reef Knot.

  24. KnotsBowline • Uses - Best for security and Life Lines • Forms non slip loop • Easily opened • The Rescue Knot

  25. KnotsFisherman’s Bend • Uses - Permanent knot • Ideal for anchors

  26. KnotsFigure of Eight • Use - Self jamming knot, used as end stopper

  27. KnotsHighwayman’s Cutaway • Use - A very secure "quick release" knot

  28. Summary • Anchor Types • Anchoring Procedure • Anchoring • Rope Types, Composition and Strength • Shot Lines • Lazy Lines • Knot Types and Uses

  29. Questions?

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