Deck Equipment and Marlinspike Seamanship3375

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    NS100

    Fundamentals of

    Naval Science

    Deck Equipment and

    Marlinespike Seamanship

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    Mooring Lines

    Mooring lines are the lines used to secure theship to a wharf, pier or another ship.

    Definition of lines:

    Breast lines- Run at right angles from the ship,control distance of ship from pierAft spring lines- Tend aft from ship, control

    forward movement.

    Forward spring lines- Tend forward from theship, control aft movement

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    Mooring Lines

    1 3 4 5 62

    Numbering of lines:#1 - Bow line #6 - Stern line

    #2 - Aft bow spring line

    #3 - Forward bow spring line#4 - Aft quarter spring line

    #5 - Forward quarter spring line

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    Mooring Lines

    DO NOT MIX MOORING LINE

    Never mix lines of differentconstructions or material . Eachtype of rope exhibits different

    elongation characteristics andmixing will result in an unequalload sharing

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    CLEAT

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    BOLLARD

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    BOLLARD

    Bitts

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    Ground Tackle and other MooringEquipment

    Chock

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    Ground Tackle andother Mooring Equipment

    Capstan

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    Rat guards

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    DIP THE EYE

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    Ground Tackle and

    other Mooring Equipment

    Chafing gear Fenders

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    Ground Tackle andother Mooring Equipment

    Padeye

    Lifelines- Lines erected around the edgesof decks, referred to as follows:

    Top-LifelineMiddle - Housing lineBottom - Foot ropeSnaking - Netting rigged between foot rope

    and deck.

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    Ground Tackle andother Mooring Equipment

    Boatswains chair

    Leadline

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    Ground Tackle and other MooringEquipment

    Pilots ladder

    Accommodation ladder

    Sea ladder

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    Marlinespike Seamanship

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    Rope and Line(classification and construction)

    Fiber rope- Commonly called line, it isfashioned from natural or synthetic fibers- Measured by circumference

    - Types of construction:

    - Twisted- Braided

    - Plaited

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    Rope and Line(classification and construction, contd)

    Types of fiber rope:Natural: Synthetic:

    -manila - nylon - Kevlar

    -cotton - polyester

    -hemp - polypropylene

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    Natural vs Synthetic(contd)

    Important differences :Synthetic fiber lines slip more easily.

    Synthetic line has higher breakingstrength.

    Synthetic line has poor knot-holdingcharacteristics.

    Synthetic lines stretch under load.

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    Rope and Line(classification and construction, contd)

    Wire rope- basic unit of construction is the

    metal wire.

    -Measured by diameter.

    - Construction: individual wires are laid

    together to form strands, and strands are laid

    together to form the wire rope.

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    Rope and Line(classification and construction, contd)

    Wire rope (contd)

    - Designated by

    - number of strands per rope, and

    - number of wires per strand.

    - example: 6 x 19

    6strands per rope

    19wires per strand

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    Rope and Line(classification and construction, contd)

    Wire Rope (contd) -

    - large number of small wires

    produces high flexibility but low abrasion

    resistance.

    - a small number of large wires

    would stiffer, but more resistant to

    abrasion.

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    Rope and Line(classification and construction, contd)

    Combination -

    - measured by diameter

    - six main strands of fiber and wirerope interwoven, laid around a fiber core.

    - used as mooring lines for extra

    strength

    - fiber rope adds great flexibility andelasticity

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    Small Stuff

    Circumference less than 1 3/4 inches.IDd by the number of yarns (threads) ratherthan its size.Marline- Two-strand, tarred hemp, used for

    serving a line. (Serving a line means to wrapit with marline to protect it from weather or tomake it look neater. Most commonly used onnatural fiber lines)

    Houseline- Three-strand, left laid tarred hempfor light seizing, light rigging, and work exposedto weather.

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    MONKEY LINES

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    Small Stuff (contd)

    Seizing stuff- Very small, used for fancierjobs that marline can accomplish.

    Ratline stuff- Dark brown and coarse, it isprimarily used for snaking

    Tattletale

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    Marlinespike Seamanship Terms

    Hawser- Heavy line over five inches incircumference. Used for towing ormooring.

    Bight- A loop of line or chain.Bitter End- Free end of a length of line,wire chain or cable.

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    Marlinespike Seamanship

    Terms (contd)Fid

    Coil

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    Marlinespike Seamanship Terms(contd)

    Flemish

    Fake down

    Heaving line

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    Marlinespike Seamanship Terms (contd)

    Monkey fist

    Rat-tailed Stopper- Line designed to take thestrain of a working line while shifting theline about bitts or cleats.

    Mousing

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    Marlinespike Seamanship Terms (contd)

    Shot line - Light nylon line used in a

    line throwing gun

    Bolo- Nylon line with a lead weight in canvas

    or leather, thrown from ship to ship orfrom a ship to a pier.

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