Article 11 Variation of the principal Order
After article 18 there shall be inserted the following articles—
“Rights of navigation bodies
19Nothing in this Order shall affect prejudicially the exercise of any statutory power or authority from time to time vested in or exerciseable by any person carrying on the undertaking of any navigation, harbour, general lighthouse or conservancy authority.
Exemptions for scientific purposes
20The Committee may, by authority given in writing, exempt any person who is dredging, fishing for or taking oysters or clams for scientific purposes from any provision of this Order or from any restriction imposed or regulation made under this Order.”.