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KHM Portsmouth



King’s Harbour Master Portsmouth

LNTM 34/24

1. NOTICE IS HEREBY GIVEN by the King's Harbour Master Portsmouth that minor Uncrewed Surface Vehicle (USV) bathymetric survey operations will be conducted around HMS Warrior 1860 located on the eastern side of Portsmouth Harbour daily 0800 – 1800 between the 19 February - 1 March 2024.

2. The contractor for these works is “Ultrabeam Hydrographic” working on behalf of The National Museum of the Royal Navy, who will be using their ‘BLACK SWAN’ Unmanned Surface Vehicle, for the purposes of multibeam echosounder acquisition for these works with an additional Rib to act as safety vessel in support of the ‘BLACK SWAN’ USV.

Area to be surveyed

Black Swan USV

3. Mariners are requested to keep a good lookout and pass the area with a wide berth and at slow speed.

4. KHM Harbour Control will be kept informed of the work in progress and the precise location of the divers and may be contacted on VHF Ch 11 or by telephoning 023 92 723689 for the latest information.

5. Cancel this LNTM on 2 March 2024.

Friday 16 Feb 2024

King's Harbour Master

Owners, Agents, Charterers, Marinas, Yacht Clubs and Recreational Sailing Organisations should ensure that the contents of this Notice are made known to the masters or persons in charge of their vessels or craft.

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