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anchor cables

Nur Munirah Hasni

Created on September 5, 2021

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Transcript

ANCHOR CABLE

NAME : NUR MUNIRAH BINTI HASNI COURSE : BME (SEMESTER 7) SUBJECT : SEAMANSHIP AND CHARTWORK LECTURER : MR. MUHAMMAD KASSFI RAMLI

Index

ANCHOR CABLE

MARKS ON CHAIN CABLES

AMOUNT OF CABLE USED

ANCHOR

CABLE/CHAIN

  • An anchor is connected to a ship through a cable
  • An anchor cable can vary in size, material and length from a 2-inch manila for a small boat to a 3-inch chain cable for an aircraft carrier
  • Length of studded chain cable is normally measured in shackle or half shackle
  • 1 shackle = 27.43 metres = 15 fathom = 1 shot

+ info

Lugged Joining Shackle

To join two cables together

Joining Shackles

Lugless Joining Shackel

To join two anchor cables together

Arrangment Onboard Ship

A cable or chain locker is a compartment in the forward position of ships in which anchor chain is stowed

Cable/Chain Locker

MARKS ON CHAIN/CABLES

The detachable chain is painted colour while chain painted white on each side is remark of how many shot has been released to the sea.Yellow paint on each chain after to the last is to give alerts that its running out of chain. Red paint next to the last is the last shot.

AMOUNT OF CABLE USED

Amount of cables to veer in shackles is twice the square root of the depth of water in metres

Standard condition: Length of cable = [(Depth of water in meters * 2) + 90 ] / 27.5 1:5 (ship length: cable length)

Step 1

Step 2

Step 3

When good holding power can not be expected: (e.g. Strong Wind, Strong Current, Harder Sea bottom) Length of cable = [(Depth of water in meters * 3) + 140 ] / 27.5 1:7 (ship length: cable length)

Thank you!