Swinging circle


Swinging radius

The swinging circle might vary with the changes in tidal levels and in the weather. However, it is important to have a fair idea of the radius around which the ship might move about.

The swinging radius of the vessel = Length of vessel + length of cable – Depth of water.

For example

  • Length of the ship from bridge to hawse pipe = 125 m
  • Length of cable = 6 shackles (6 x 27.5)           = 165 m(+)
  • Depth of water                                                 = 15 m(-)
  • Swing circle radius of the vessel                      = 275 m

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