2. No person shall use blue flashing lights and/or sirens other than Police, Customs, Harbour Master or other enforcement vessels authorised by the Harbour Master. 3. A purple flashing light, for use on an emergency response craft for the purpose of identifying itself to a vessel or aircraft involved in a response, shall be authorised in writing by the Harbour Master. 4. Any vessel authorised to use purple flashing lights by the Harbour Master shall only display them when: (a) the use is required to assist the location of a vessel or person in need of assistance; or (b) the use is required to assist in the identification of the vessel to an aircraft involved in an incident. 5. The lights may not be used when the vessel is underway at a speed in excess of 12 knots, and neither imply nor grant status or privilege to that vessel. Any use of the purple lights should be for a short period of time. A vessel authorised by this clause must observe clause 3.2 (speed) at all times. 6. No person may blow or sound, or cause to be blown or sounded, the whistle, siren or horn of a vessel, within any harbour area, except as a navigation safety signal. However, nothing in this Bylaw precludes the testing of such a whistle, siren, or horn before the vessel leaves the wharf, or for maintenance purposes. 2.12. Timber and logs 1. No person, except with the written permission of the Harbour Master, may tow, moor, place or leave any log in any tidal water within the region. 2. The master of every vessel engaged in loading, discharging or carrying of logs shall ensure that any log or logs which are lost overboard during the loading, discharging or carrying of logs are retrieved as soon as possible so that such log or logs do not become a hazard to navigation. 3. Where any logs lost overboard are unable to be retrieved, the master, in observing clause 2.12.2 above, will, prior to departure, cause a report to be delivered to the Harbour Master detailing the logs lost over board and the action taken to retrieve them. 4. Where the master of any vessel fails to observe the requirements of 2.12.2 the Harbour Master may cause such log or logs to be retrieved. Any costs involved in such operation shall be recoverable from the owner of that vessel as a debt to Council. 2.13. Discharge of Firearms 1. No person may discharge a firearm on board any vessel except as provided for in Maritime Rule Part 23 – Operating Procedures and Training, Appendix 3, Distress Signals, without prior written permission from the Harbour Master. Page 16