MOORINGS.ppt

Mooring Operations PRINCIPLES OF MOORING

• Forces acting on a moored vessel • Wind and current • Interaction with passing ships • Tidal rise and fall and change of draft or trim due to cargo operations • Waves

INTERACTION WITH PASSING SHIPS:

When a ship passes close to a ship moored fore and aft,the interaction  between the vessels will often cause the moored vessel to “range on her moorings”. Hence the moorings need to be ept taut.

"urge astern

"tern repelled

"urge ahead

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TIAL RISE AN AN FALL/ FALL/ CHANGE CH ANGE OF O F RAFT OR TRIM 0E TO CARGO OPERAT OPERATIONS IONS

%reast lines provide the ma&imum transverse restraint and spring lines  provide ma&imum longitudinal restraints . The 'lassification societ( will specif( the minimum number of mooring line and minimum si)e which the particular ship should have.

• The vertical dip of a *ooring +ine dip

WIN AN C0RRENT:

The forces acting on the vessel depend upon  • Wi  Wind nd speed and direction • -nder eel clearance and vessels draft • 'onstruction of the berth, as piles and underwater obstructions can slow the flow flow,, with a build up of pressure at the face of berth.This force will tend to move the vessel awa( from the berth.

POSITION AN ISTRI10TION OF LINES

• *ooring lines should be arranged as s(mmetric as possible about the midship point. • %reast should be positioned as perpendicular as possible to the longitudinal centre line of the the ship. • "pring lines should be as parallel as possible to the longitudinal centre line of the vessel. • The vertical dip of the mooring line should be as low as possible. • ll mooring lines should preferabl( be of the same si)e and of the same material if leading to the same bitt. • "hort lengths should be avoided.

IENTIFICATION IENTIFICAT ION OF MOORING MOORI NG LINES

Head +ine

Forward spring

%reast +ine

ft "pring "tern +ine

Roller  fairlead

Pedestal fairlead

Bitts

Synthetic rope tail

Drum end

Brake

Mooring winch

EC2 MOORING FITTINGS

 !. /anama +eads

#. 0oller fairlead

$. /edestal fairlead

1. *ulti2ngled Fairleads

3. %ollards and *ooring %its

Na%e the parts

)"i$3 Re4ease Hoo3s

Hoo3s $an #e re4ease5 %an"a44! or a"to%ati$a44! #! p"sh #"tton 6ro% a re%ote 4o$ation

A'oi5s e7posin e7posing g personne4 to %ooring 4ines "n5er tension

Conne$ting a t"g to a sa6et! 1it

is$onne$ting a t"g "sing a sa6et! 1it

O66shore towing operations "sing 8Shar3 9aws an5 towing pins

MOORING MACHINER; AN E)0IPMENT

• Winches4 'apstans • Warping winch • *ooring winch • -ndivided drum • 5ivided drum winch • "elf tension winches

H!5ra"4i$ T"gger Win$h Product Description Vessel Winch specifications: 1) Drive: Electric / hydraulic 2) Configuration: Single or doule dru! "ith / "ithout "arping end #) Wire dru!: Steel "ire rope dru! $) %ated pull &1st layer): # to #'( *) +ra,e: -olding 1.* ti!es the rated r ated pull &static first layer) 0) Wire speed: p to 2' !/!in

Warping Wa rping r"% Capstan

MOORING OPERAT OPERATIONS IONS Preparations:

• /repare heaving lines, messenger lines,fenders,stoppers. • -nlash mooring lines from stowed position and eep read( ad6acent to their wor area. •  mooring line which has to be sent out 7uicl( should be faed out on dec. • Tr( out winches and windlass and lubricate if necessar(. • 8rease all roller fairleads. *ae sure woring space is clear. • Te  Test st all means of communications with bridge. bridg e.

1ERTHING 1ERT HING / 0N1ERT 0N 1ERTHING HING

• -se of a mooring boat or if close enough, use heaving line. • "ecuring of mooring line on board. • -se of stoppers, to transfer mooring line on to bits4bollards. • 5o not use n(lon stoppers, due to e&cessive stretch. • 9n wire ropes, use chain stoppers with rope tail . • -se of rat guards once all lines are made fast.

SAFET; IN MOORING OPERAT OPERATIONS IONS

• -se of //: ;gloves,helmet,safet( shoes$7HHgEs=6eat"re(en5s$re en

SNAP 1AC2 ANGER ?ONE

/oint of brea  /oint of restraint

/oint of brea  Fairlead /oint of  restraint

5anger )one

5anger )one

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Mooring stoppers

"topper line

angers o6 %ooring operations Ris3 assess%ent o6 %ooring stations A ris3 assess%ent sho"45 #e %a5e o6 a44 %ooring areas on #oar5B 4oo3ing at the spa$e with a 'iew o6 p"rpose4! sear$hing 6or haar5s haar5s that %a! $a"se in,"r! in,"r! Mooring areas nat"ra44! $ontain %an! trip haar5sD an5 high4ighting these is a goo5 starting point

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EN

S+ %eport after 3oot Severed During (ooring 4n 25 6une 2'1$ the #27 ! long ul, carrier  Julia N   entered the port of Port -edland Western ustralia and "as !anoeuvred alongside nderson Point nu!er t"o erth y the pilot "ith the assistance of four tugs. t #:21 in the afternoon "hen it had een confir!ed that the ship "as in position the pilot called the !aster of the tug at the stern of the ship to co!e in and retrieve its to" line. When the tug "as in position the pilot as,ed 6ulia 89s !aster to instruct the aft !ooring tea! &second !ate and t"o sea!en) to let go the tug9s to" line. s the to" line "as retrieved a sea!an9s right leg so!eho" eca!e entangled in the !essenger line. -e "as then dragged aout $ !etres across the dec, and into the rollers of the fairlead. When his legs entered the fairlead the !essenger line ca!e under tension and it severed the sea!an9s right foot. t 10$$ the helicopter departed "ith the inured sea!an. -e "as ta,en to the Port -edland -ospital "here he "as provided "ith !edical treat!ent.

ANCHORS AN E)0IPMENT

The! per6or% we44 in a 'ariet! o6 $on5itions with go

P4o"gh

STOC2LESS ANCHOR 

nchor shacle

"han 

%ill Flue rm Tripping palm

Head

'rown

2ENTER LIN2 

ANCHOR CA1LE

MAR2INGS ON THE ANCHOR CA1LE

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 ?9 # "H'>+:

1ITTER EN

1ITER EN

PREENTERS AN STOPPERS

ANCHOR LASHING

WINLASS

ARRANGEMENT FROM ANCHOR TO CHAIN LOC2ER 

Brake Cable

Gypsy

stopper  Spurling Pipe

Hawse Pipe

ANCHOR PREPARATIONS

Hawse Pipe

Contro4s

*ooring st(les • "ingle nchor  • 0unning *ooring • 9pen *ooring • *ooring %uo(

SAFET; PRECA0TIONS  2eep wor3ing area 6ree o6 oi4 an5 grease  S"66i$ient 4ightingD han5 tor$h t or$h  Wear PPE  o not stan5 in 5ire$t 4ine o6 the an$hor $a#4e  o not operate %a$hiner! i6 "ns"re with $ontro4s  Operate on4! i6 instr"$te5 to 5o so  Co%%"ni$ate with the #ri5ge  Loo3 o'er the si5e #e6ore 4etting go the an$hor

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O66shore towing operations "sing 8Shar3 9aws an5 towing pins

EN