Mooring Anchooring

7/24/2019 Mooring Anchooring

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- Mooring & Anchoring

With the aid of a diagram, draw a ship showing all the basic mooring lineused in berthing to a wharf, and describe how each of these lines assist tokeep the vessel in position.

Head line Forwardbreast line

Forwardspring

Aft spring Aft breastline

Stern line

Holds thebow in andassists theback springto hold theship from

moving aft

Keep the shipalongside

tight againstthe wharf

Stops theship frommovingforward

Stops theship from

moving aft

Keep the shipalongside

tight againstthe wharf

Holds thestern in anassists the

forwardspring to

hold the shfrom movin

forward

With the aid diagrams describe how the forces of interaction b a passingship a!ects the moored vessel alongside a wharf.When a ship passes close to a ship moored fore and aft, the interactionbetween the vessels will often cause the moored vessel to range on her

moorings. Hence the moorings need to be kept taut.


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"

Surge astern

#

Stern

repelled

Surge ahead


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$

What is the di!erence between a %anama &ead and a 'oller Fairlead( )se adiagram to assist with our description.

What are the %edestal leads and what is its purpose(%edestal leads are single, hori*ontal rotating rollers mounted on a pedestal to

lead lines at the correct angle and height onto a winch drum or drum end.

&ist si+ ha*ardssafet issues associated with mooring operations- o not stand in the bight, coil of loop of ropes- o not stand over lines that are under tension or ma come under

tension

- Keep clear of lines under tension and beware of the snap back *one.Have an emergenc escape plan for things that might go wrong

- eware of slips, trips and falls due to hdraulic /uid leakage frommachiner and /ake lines

- Avoid sharp rope bends and sharp angled surfaces as it will weaken therope

- o not place snthetic and wire ropes on the same bits or pass themthrough the same fairlead as the wire rope will cut the snthetic rope


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- 0ever leave a winch operating unattended- 1heck drum ends and winches are clear before operating- o not get too close to bitts or drum ends when tensioning a line

With the aid of a diagram, describe the snap back *one of a parting

What is the most common tpe of anchor that is carried on-board modern

ships(Stockless anchor

What is the di!erence between a windlass and capstan(With a windlass, the gpsie rotates around a hori*ontal a+isWith a capstan, the gpsie rotates around a vertical a+is

What is a windlass(2t is a machiner on the forecastle that is used for anchor work. 2t has drumends known as warping drum to assist with mooring operations.

what means is the gpsie connected to the rotating part of the windlasswhen retrieving the anchor( means of the dog clutch

With regards to anchor operation, what is a shackle(2t is a shot of chain "3.4 metres in length

what means are length of anchor chains 5oined together(


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means of the special shackle called the kenter link

How is the "nd

shackle of an anchor chain marked(6he kenter link is painted in white or red and the two chain links either sideof the kenter link is painted white. Sei*ing wire or a hose clamp is also placedon the stud of the second link awa either side form the kenter link.

0ame the parts of the anchor arrangement below

rake


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What is the meaning of the following terms(

Anchor A-1ockbill6he anchor is lowered clear of hawse pipe and hanging verticall 5ust clear ofthe waterline

Anchor aweighWhen heaving up, the anchor has 5ust cleared the sea bed 7bottom8

rought up9essel is riding to her anchors with the cable holding her in position

1learing anchors1learing awa the anchorAll sea lashings are removed with the anchor riding on the brake

ragging anchor

6he vessel is dragging the anchor over sea bed due to strong tide, wind,heav weather or not enough cable out

'ender cable6he brake is applied gentl so that the weight comes on the cable, it will runout slowl

Snub cableStop the cable running out :uickl b using windlass brake

Surge cable

&et the cable run free, not using brake or windlass motor

6rail anchorrag the anchor 5ust below the waterline to wash mud o! the anchor

)p and down6he anchor is lifting verticall out of the water

9eer cable%a out cable under power

Weighting anchorHeaving the anchor in and bringing it up to the hawse pipe

Short sta6he anchor cable is growing out of the hawse pipe, close to vertical

&ong sta6he anchor cable is growing out of the hawse pipe, close to hori*ontal


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2n step order, list the procedure for preparing an anchor for letting go#. rie;ng with the master or mate".


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- Wear safet boots, helmet, safet glasses to prevent ee in5ur from/ing debris

- o not stand in the direct line to the anchor chain as it comes out ofthe chain locker

- o no operate machiner unless ou are familiar with the controls

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Mooring Anchooring