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Boating Skills & Seamanship

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Presentation on theme: "Boating Skills & Seamanship"— Presentation transcript:

1 Boating Skills & Seamanship
Lesson 11 Lines & Knots for Your Boat Approved by DC-E USCG AuxA, Inc

2 Lesson Objectives Materials used in making rope
Use, selection and care How to store rope About rope/line hardware Useful knots How to secure the boat’s line

3 Marlinspike Seamanship
Art of handling & working all kinds of fiber, synthetic & wire rope Includes Knotting, splicing, worming, parceling, serving & fancy work What to a landlubber is - ROPE To a seaman is - LINE

4 Type of Line Natural Manila, Sisal Shrink when wet and rot when dry
Weaker size for size than synthetics

5 Type of Line (cont’d) Synthetics Nylon
Strongest size for size of synthetic Stretches most, resists chafing Does not shrink when wet Good for dock lines, towing and anchoring

6 Line Natural fiber Synthetic Wire Rope
Manila, Sisal, Hemp, Jute, Cotton, Flax Synthetic Nylon, Polyester (Dacron), Polypropylene Wire Rope Steel strands

7 Natural Fiber Line Best is Manila Sisal is cheaper, but inferior
Has strength, durability & minimal stretch Sisal is cheaper, but inferior Disadvantages Shrink when wet Rot if stowed wet Size for size, weaker than synthetic

8 Synthetic Line General - good wet/dry strength, resists water, mildew & rot Nylon - strongest, resists chafe, has most stretch, good for anchor and mooring

9 Synthetic Line (cont’d)
Polyester - costs more than nylon, easier & smoother to handle, use anytime, no stretch Polypropylene - floats, costs less, deteriorates in sunlight, hard, slips on cleats, cuts

10 Manufacture of Line Laid Braided Right laid Left laid Single braided
Double braided

11 Kinds of Rope Braid Twist

12 Composition of Right Laid Line
fibers yams strands rope

13 Double Braided Line core

14 Wire Rope Maximum STRENGTH Minimum STRETCH
Used mostly on sailboats for standing and running rigging Used on davits

15 Yachting Ropes WEIGHT AND STRENGTH COMPARISON SIZE Diameter 1/4” 3/8”
1/2” 5/8” 3/4” 7/8” 1” 1-1/8” (lbs) weight Per 100ft 1.7 3.5 6.6 10.5 15.0 20.5 27.0 34.5 Breaking Strength 1,750 3,200 6,600 10,200 13,500 18,500 24,000 32,000 Weight 2.2 4.5 7.6 12.4 19.3 23.5 31.3 40.4 1,300 2,850 4,900 7,800 10,780 14,000 17,500 23,500 Per 100 ft. 2.0 4.0 6.1 13.1 16.3 22.0 26.5 35.2 600 1,350 2,650 4,400 5,400 7,700 9,000 12,000 WEIGHT AND STRENGTH COMPARISON NYLON DACRON MANILA SIZE

16 “Ends” of Line Ends need to be protected from fraying & unlaying
Ends can be Whipped with thread/small stuff Taped with waterproof tape Dipped in plastic liquid Melted with heat/flame

17 Temporary Whipped start finish Pull & cut

18 Making Up Lines Faking Flemishing Coiling
Laying out line in figure eights so it is free to run without tangles Flemishing Neat, ornamental way to store line on deck Coiling Proper way to put line away in a locker or compartment Coiling Faking Flemishing

19 Losing Strength in Rope
100 76 70-65 60 55 45 95-90 87 85 splices knots No knots or splices Anchor or Fisherman’s bend Timber hitch Round turn Two Half-hitches Bowline Clove hitch Sheet bend or Weaver’s knot Square or Reef knot Eye splice Long splice Short splice

20 Parts of a Line Overhand Loop Working End Underhand Loop Standing Part
Bitter End

21 Round Turn

22 Basic Mariner’s Knots & Bends
Figure 8 Square Knot Clove Hitch Sheet of Becket Bend Anchor Bend Timber Hitch Bowline Half Hitches Rolling Hitch

23 Figure 8 The Stopper Knot It can be untied after being jammed
Used on all lines on sailboat except spinnaker sheets

24 Square Knot Reef Knot - Alternate name To tie
Used to secure reefed sail to boom Fasten two lines of equal size Difficult to untie if jammed To tie Right over left, then Left over right

25 Clove Hitch Used to tie line to piling Knot will jam under load
Difficult to untie if load cannot be relieved

26 Sheet Bend Becket Bend - alternate name
Ties two unequal sized lines together Easy to untie after heavy strain

27 Two Half Hitches Used to tie a line to a Ring, Piling, Post or Grommet
Easier to untie under tension and more permanent than a clove hitch

28 Round Turn with 2 Half Hitches
To tie a line permanently to a piling

29 Anchor or Fisherman’s Bend

30 The Bowline To make a temporary loop
The rabbit comes up through the hole Around the tree Then back down into the hole

31 The Bowline The King of Knots Easy to untie
Tie Jib sheets to Clew of Jib Tie lines to fittings Tie lines of equal or unequal size together Tie a rode to an anchor

32 Bowline

33 Timber Hitch

34 Rolling Hitch Around again, cross over first turn passing between the first turn and the standing part of its own line Tie a half hitch Around once

35 Cleats and Chocks

36 Mooring Cleat

37 Belaying to a Cleat

38 Jam Cleat Working End Standing Part

39 Lark’s Head

40 Cam Cleat

41 Chock Used to protect boat and line

42 Securing Cleats Use “through bolts” and backing block Deck

43 Securing Lines Bow Bitts Samson Post

44 Dipping the Eye Other boat’s eye on piling
Your eye can be removed or put on without disturbing the other boat’s line

45 Turnbuckle

46 Blocks On a vessel, pulleys are called blocks Shell shackle
Pin shackle Outer Strap Inner Strap Sheaves Thimble Becket Cheek

47 Double Sheave Block

48 Thimble

49 Special Lines Lead Line Measures Depth of Water
Weighted with a lead weight (Hollow end for bottom sample)

50 Dock Lines Stern line Bow line Breast line Spring line

51 Dock Lines Spring line Bow/Stern lines

52 Fenders

53 Summary Natural fiber vs. Synthetic line Laid vs. Braided line
Coiling, Faking, Flemishing Knots, Bends, Hitches Splices Securing lines Dipping the Line

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