SABOT

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SABOT

• Standardized Auxiliary Boat Operations Training
• Ninth District - Eastern Region
• COMO. Lew Wargo, Sr.
• DSO-OP/CQEC
• 03 APR 2015
• MARLINESPIKE

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SABOT

• Marlinspike

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TYPES of LINE

• A. Typed by Material
• Natural
• Synthetic
• B. Typed by Construction
• Braided
• Twisted

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TYPES of LINE

• Twisted tends to be less expensive than braided.
• Braided is smoother to handle
• Both have equal strength

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TYPES of LINE

• Cotton
• Natural fiber
• Weak
• Low cost
• Only good for heaving lines and decoration

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TYPES of LINE

• Sisal
• Natural fiber
• Inexpensive
• Coarse
• Susceptible to rot (not commonly used)

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TYPES of LINE

• Manila
• Natural fiber
• Strongest of natural fibers
• Standard for comparison of most lines
• Susceptible to rot (should be replaced yearly)

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TYPES of LINE

• Nylon
• Most near all-purpose synthetic line
• Costly
• High stretch (ability to absorb shock)
• 3 times strength of similar sized manila
• Resistant to sunlight
• Does not weaken with mildew
• Easy to work

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TYPES of LINE

• Dacron
• Synthetic material
• Slightly weaker than nylon (about 80)
• Very little stretch
• Less Resistant to sunlight than nylon
• Wears well (chafe and abrasion resistant)
• Costly

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TYPES of LINE

• Polyethylene
• Synthetic material
• Used in smaller sizes (ski tow ropes)
• Floats
• About 1 ½ the strength of manila
• Holds up well to the environment (sun, etc.)
• Low cost

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TYPES of LINE

• Polypropylene
• Synthetic material that comes in many colors
• Floats and is much less costly than nylon
• Wear resistant but slippery
• Becomes stiff with age, use and sunlight
• Looses strength when stretched
• Fuses (melts) under heavy loads
• Lower cost
• NOTE If used for towline, record length and
  check
• after use for stretch (weakening)

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TYPES of LINE

• Polyester
• Wears well and resistant to chaffing and sun
• Floats
• Very low stretch (makes a poor towline)

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LINE COMPARISON

• BREAKING
• TYPE SIZE STRENGTH
• Nylon 5/8 9,000
• Polypropylene 5/8 5,040
• Dacron 5/8 7,200
• Nylon 7/8 17,015
• Polypropylene 7/8 9,528
• Dacron 7/8 13,612

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LINE COMPARISON

• POLY-
• FACTOR MANILA DACRON PROP NYLON
• Stretch 1X 1.2X 1.3X
  3X
• Durability 1X 4.2X 5X
  4.5X

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TOWLINE

• Select for strength, cost shock absorbing
• Inspect regularly
• Store for easy and quick use.
• Store w/bridle if bridle is used in rig
• Eye should be spliced in the end
• Store w/pendant if used

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BRIDLES

• Used on some tows and many towboats
• Used to center tow
• Should be same strength as towline
• If hardware is used, hardware should be
• stronger than the line
• Have different sizes

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PENDANTS

• Short length of towline used to prevent wear on
  long towline
• Could be 1/2 of a bridle

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ANCHOR LINE

• Dedicated for anchoring
• Pre-connected ready for quick use utilizing a
  swivel, shackle (that is moused) and chain.
• Strong enough to hold vessel
• Ability to absorb shock
• Long enough to give scope of 71 or 101
• Have a second line

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DOCK LINES

• Dedicated for docking use. (If you leave
• lines on your dock have another set for use
• in other locations.)
• Strong enough to hold your boat (Double-up at
  times)
• Ability to absorb shock loads

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ALONGSIDE TOW LINES

• Dedicated use
• Sets of 4 lines
• Different sizes (Have a smaller size for towing
  small boats)
• Should be approximately as long as the facility

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MAINTENANCE

• Keep clean and inspect regularly (Clean dirt
• from lines as dirt wears lines)
• Use the proper size and type for the job
• Whip or taps ends to keep from unraveling

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STORING LINES

• Store ready for quick use
• Free of tangles and easy to pay out
• Coiled (Discuss how to coil)
• Dedicated for specific use (anchor, tow, docking,
  Alongside towing, etc.)

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STORING LINES
Lines should be kept clean, coiled and ready for
quick use
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Faking a line for quick use and without
fouling
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PARTS OF A LINE
Working End
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KNOTS HITCHES

• Bowline used to make a temporary loop
• Clove Hitch Used to attach line around
• Objects
• Double Sheet Bend Used to connect two
• lines.
• (Single sheet bend is difficult to undo if
• loaded)

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KNOTS HITCHES

• Round Turn w/two Half Hitches Used to
• attach line to an object.
• Cleat Hitch Used to attach line to a cleat.
• (Use 3 figure 8s) (NEVER use w/weather hitch).
• Weather Hitch Locking half hitches used on a
• flag pole or jack staff (Never on a boat cleat).

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SPLICES

• Much stronger than knots or hitches
• Permanent connection
• 3 Strand line is much easier and quicker to
• splice with practice.

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ROPE CONSTRUCTION
Laid rope
Webbing
Reprinted with permission from Knots, Slices and
Line Handling A Captains Quick Guide by Charlie
Wing
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STOPPER KNOT
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DOUBLE SHEET BENDor BECKET BEND

• Bend
• Ties one line to another

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CLOVE HITCH

• Clove Hitch
• Will slip if not under tension
• Finish with Half Hitch

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TWO HALF HITCHES

• Hitch
• line attached to object

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ANCHOR BEND
Secure way of attaching line to an object (anchor)
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BOWLINE

• Forms a temporary loop

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SECURING LINES
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SECURING LINES
Cleats are used to secure lines
Blocks
Weather Hitch Do Not Use
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DIPPING THE EYE
Second line (white) passes under first line
(black) and then over the post