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