Paragraph 8
Subject to sub-paragraph (2), the master of a vessel must ensure that—
it is steered at all times by a person competent to do so, and
no automatic devices or equipment are used for steering purposes unless attended by a competent helmsman.
The requirement of sub-paragraph (1) to ensure that a vessel is steered at all times by a person competent to do so does not apply if a person steering a vessel is undergoing training, so long as—
that person is being supervised on board the vessel by such a competent person; or
that person is steering the vessel in such part of the estuary as may be designated by the harbour master as suitable for training purposes.
A person under the age of 16 years must not steer or navigate within the estuary any power-driven vessel of over 10 horsepower unless that person is—
in possession of an appropriate Royal Yachting Association or equivalent qualification, or
accompanied by a person aged 18 years or over who is competent to steer or navigate such a vessel.