# The Portland Harbour Revision Order 1997, Paragraph 58


(1) Except with the prior consent of the harbour master no firearm or air-gun shall be discharged from any vessel within the harbour or from the harbour premises otherwise than by a member of a police force or a member of Her Majesty’s naval or military forces properly authorised to do so in the course of his duty.
(2) No ship’s gun on board any vessel lying within the harbour shall be loaded, except in so far as may be necessary from time to time for training personnel in the loading and unloading of the gun or for testing its mechanism, nor shall any such gun be discharged except as a signal of distress.

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Source: https://www.legislation.gov.uk/uksi/1997/2949/schedule/1/paragraph/58 (the official version)
Page: https://openlegislation.uk/portland-harbour-revision-order-1997/schedule-1/paragraph-58
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.