OCIMF_Mooring_Equipment_Guidelines_(Second_Edition)

IMO

INDEPENDENT WIRE

ROPE CORE IlWRC)

ISO

JIS

kDWT

LEAD

LENGTH BETWEEN

PERPENDICULARS (LBP)

LENGTH OVERALL (LOA)

LIGHTENING OR

LlGHTERING

LOADING ARMS

MANDEL SHA eK LE

MESSENGER LINES

MINIMUM BREAKING

LOAD (MBL)

MOORING RESTRAINT

MUL TI-BUOY MOORINGS

(MBM)

N

PANAMA TYPE FAIRLEAD

PEDESTAL ROLLER

FAIRLEAD

PRE-TENSION

SAFE WORKING LOAD

(SWL)

SEA ISLAND

SEICHE

Imerna!lonal Maritime Organizalion_

A type of consuuct ion of wire rope.

lnlernational Organization for Standardization.

J apan~se [ndust ria I St andard.

Deadweight in Ihousands of tonnes.

The direction a mooring line takes up whilst being handled or when

made fast.

The length of a ship, generally between the stem at the design loadline

and the centre of the rudder slock.

The extreme length of a ship.

The process of transferring eargo from a tanker to another ship.

Oil lransfer units between ship and shore for discharge and loading;

may be articulated all-metal arms (hard arms) or a combinat ion of

metal arms and hoses.

A special shackle used to connecl a wire mooring line \0 a synthelic

tail.

A light line allached to the end of a main mooring line and used to

assisl in heaving the mooring 10 the shore or to another ship.

The minimum breaking load of a mooring line as declared by the

manufacturer for a new line. [I does not include allowance for

~plicing or for wear and tear.

The capability of a mooring system 10 resisl eXlernal forces on the

ship.

A facility whereby a tanker is usually moored by a combination of

the ship'S anchors forward and mooring buoys aft and held on a

fixed heading. Also called conventional buoy moorings (CBM).

Newton (unit of force); lkN = 1000 N.

A non-roller type fairlead mounted at the ship's side and enclosed so

that mooring lines may be led to shore with equal facility either

above or below the horizontal. Strictly pertains only 10 fairleads

complying with Panama Canal Regulations, but often applied 10 any

closed fairlead or chock.

A roller fairlead usually operating in a horizontal plane. lIs purpose

is to change (he direction of lead of a mooring or other line on a

ship's deck.

Additional load applied 10 a mooring line by a powered winch over

and above thal required 10 remove sag from Ihe main run of the

line.

A load less than the yield or breaking load by a safety faclor defined

by a code. standard or good engineering practice.

A pier struclure Wilh no direct connection 10 the shore, al which

tankers can berth. Benhing can take place either on one or both sides

of the structUre.

Very long waves of small height generated by resonant oscillation

within a parrly closed harbour or other body of water. Strong

horizontal currents can also be set up which may cause ship surging

in adverse circumstances.

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