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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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Presentation on theme: "SABOT Standardized Auxiliary Boat Operations Training Ninth District - Eastern Region COMO. Lew Wargo, Sr. DSO-OP/CQEC 03 APR 2015 MARLINESPIKE."— Presentation transcript:

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

2 SABO T Marlinspike

3 TYPES of LINE A.Typed by Material: Natural Synthetic B. Typed by Construction: Braided Twisted

4 TYPES of LINE Twisted tends to be less expensive than braided. Braided is smoother to handle Both have equal strength

5 TYPES of LINE Cotton: – Natural fiber – Weak – Low cost – Only good for heaving lines and decoration

6 TYPES of LINE Sisal: Natural fiber Inexpensive Coarse Susceptible to rot (not commonly used)

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

8 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

9 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

10 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

11 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)

12 TYPES of LINE Polyester: Wears well and resistant to chaffing and sun Floats Very low stretch (makes a poor towline)

13 LINE COMPARISON BREAKING TYPESIZESTRENGTH Nylon5/8” 9,000 Polypropylene5/8” 5,040 Dacron5/8” 7,200 Nylon7/8” 17,015 Polypropylene7/8” 9,528 Dacron7/8” 13,612


15 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

16 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

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

18 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 7:1 or 10:1 Have a second line

19 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

20 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

21 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

22 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.)

23 STORING LINES Lines should be kept clean, coiled and ready for quick use

24 Faking a line for quick use and without fouling

25 PARTS OF A LINE Working End

26 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)

27 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).

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

29 ROPE CONSTRUCTION 29 Laid rope Webbing Reprinted with permission from Knots, Slices and Line Handling: A Captain ’ s Quick Guide by Charlie Wing


31 DOUBLE SHEET BEND or BECKET BEND Bend Ties one line to another

32 CLOVE HITCH Clove Hitch Will slip if not under tension Finish with Half Hitch

33 TWO HALF HITCHES Hitch line attached to object

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

35 BOWLINE Forms a temporary loop


37 Cleats are used to secure lines Weather Hitch Do Not Use Blocks

38 DIPPING THE EYE Second line (white) passes under first line (black) and then over the post

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