From The Poole Harbour Commissioners web site:-
2aa Without prejudice to byelaws 2(a) and 2(b) within the limits of Poole Harbour (which for the purposes of this byelaw No. 2(aa) only shall be deemed to extend at the seaward approaches to Poole Harbour to an area within or to the West of an area taken as a radius of 1400 metres from South Haven Point (position 50º 40.78' North 01 º 56.91' West the Master of any power driven vessel or other water craft shall not, subject to the requirements of maintaining adequate steerage way and control, suffer or cause such vessel to be navigated or driven in the Harbour at a speed exceeding 10 knots through the water.
Peter (nick, nick) T
Age and treachery will always overcome youth and skill! Bullshit and brilliance only come with age and experience.