# The Portsmouth Harbour (Gunwharf Quays) Order 1999, Paragraph 2


The undertaker shall at or near a tidal work during the whole time of the construction, alteration, replacement or relaying thereof, exhibit every night from sunset to sunrise such lights, if any, and take such other steps for the prevention of danger to navigation as Trinity House may from time to time direct.

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Source: https://www.legislation.gov.uk/uksi/1999/50/schedule/2/paragraph/2 (the official version)
Page: https://openlegislation.uk/portsmouth-harbour-gunwharf-quays-order-1999/schedule-2/paragraph-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.