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SABOT

SABOT. Standardized Auxiliary Boat Operations Training Ninth District - Eastern Region COMO. Lew Wargo, Sr. DSO-OP/CQEC 15 April 2014 MARLINESPIKE. SABO T. Marlinspike. TYPES of LINE. A. Typed by Material: Natural Synthetic B. Typed by Construction: Braided Twisted.

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SABOT

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  1. SABOT Standardized Auxiliary Boat Operations Training Ninth District - Eastern Region COMO. Lew Wargo, Sr. DSO-OP/CQEC 15 April 2014 MARLINESPIKE

  2. SABOT 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 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

  14. LINE COMPARISON POLY- FACTORMANILADACRONPROPNYLON Stretch 1X 1.2X 1.3X 3X Durability 1X 4.2X 5X 4.5X

  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 and shackle that is moused. • 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. 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)

  24. 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 cleat).

  25. 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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