2 wharf or prevent vessels having free access to and egress from any wharf. (4) The master of any vessel who refuses or neglects to obey any order given under this regulation shall be guilty of an offence and shall for every such offence be liable to a fine of seventeen dollars and fourteen cents. 5. Conrrot or Boats Axonesrpe Suirs. The har- bour master or any person authorised by him in that behalf may regulate the approach of any boat, motor boat or other craft to alongside any ship anchored in a harbour and may order the removal from alongside of such ship of any such boat, motor boat or other craft and he may give such orders for the conduct of passenger traffic alongside any such ship as he shall think fit. ~ 6. Conrrot or Moror Boats. (1) The harbour master may direct any motor boat while alongside any public wharf to stop its engines. (2) The harbour master may require any motor boat using the harbour, the engines of which are in his opinion insufficiently equipped with silencers so that they make an excessive noise in the harbour, to effect: improvements to the engines so as to eliminate the excessive noise. (3) The owner or master of any motor boat who fails to comply with a direction under paragraph (1) of this regulation or to comply within a reasonable period with a requirement under paragraph (2) of this regulation shal] be guilty of an offence against these regulations. 7. Orger Doutixs or Harsour Master. The har- bour master shall— (a) direct and regulate the moving and the moor- ing of vessels in a- harbour; _ (b) see that all vessels which go ashore in a harbour are removed as speedily as possible; (c) prevent the mooring of boats, rafts and stages under the stern of ships lying in a harbour, except when the same are employed in the unloading, repair- ing or other necessary services of such ships; (d) prevent the making fast of spars astern of vessels so as to impede the navigation. —