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Underkeel clearance requirements—advisory note 02/08

The purpose of this note is to clarify with all licensed coastal pilots the requirements for under keel clearance in the Prince of Wales Channel and Gannet and Varzin Passages.

At all times the following net minimum underkeel clearances must be maintained in the Prince of Wales Channel.

  • 1.0 metre for vessels with a draught of less than 11.90 metres.
  • 10% of draught for vessels with a draught of 11.90 metres or greater.

At all times the following net minimum underkeel clearance must be maintained in the Gannet and Varzin Passages.

  • 1.0 metre for all vessels.

These UKC requirements are to be followed in combination with a maximum draught of 12.20 metres.

Pilots should be guided accordingly.

Last updated: 

Monday 2 December 2019