# The Portland Harbour Revision Order 1997, Paragraph 11


(1) Subject to sub-paragraph (2) below, the master of a vessel shall ensure that it is steered at all times by a person competent to do so; and no automatic devices or equipment shall be used for steering purposes unless attended by a competent helmsman.
(2) The requirement of sub-paragraph (1) above to ensure that a vessel is steered at all times by a person competent to do so shall not apply if a person steering a vessel is undergoing training, so long as—
(a) that person is being supervised on board the vessel by such a competent person; or
(b) that person is steering the vessel in such part of the harbour as may be designated by the harbour master as suitable for training purposes.
(3) No person under the age of 16 years shall steer or navigate within the harbour any power-driven vessel of over 10 horsepower unless that person is—
(a) in possession of an appropriate Royal Yachting Association or equivalent qualification; or
(b) accompanied by a person aged 18 years or over.

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Source: https://www.legislation.gov.uk/uksi/1997/2949/schedule/1/paragraph/11 (the official version)
Page: https://openlegislation.uk/portland-harbour-revision-order-1997/schedule-1/paragraph-11
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.