SOUTHSEA COASTAL WORKS – ROCK ARMOUR DELIVERY OPERATIONS 2023

1. NOTICE IS HEREBY GIVEN by the King’s Harbour Master Portsmouth that as part of the Southsea Coastal Scheme works, during 2023, deliveries of rock armour to the seafront area in the vicinity of Southsea Castle will continue.

Southsea rock armour landing areas

2. The rock will be delivered to the Solent by the merchant vessel MV LIAMARE (call sign PBBH) or a large barge, both of which will anchor at Spithead Anchorage 8A on arrival. Operations commenced in March 2022, and will continue into 2023, with loads at approximately seven-day intervals. Rock is transferred to the 84-metre long powered barge SELINA. Once loaded, the barge is manoeuvred under the control of a Portsmouth International Port pilot from Spithead to the Southsea sea front area using supporting tugs. This is planned to take place before high water to allow discharge operations at the top of the tide. The barge will be anchored in place for the duration of discharge operations, or in certain circumstances, beached through the low water period. Each load in MV LIAMARE will require 2 barge loads to discharge. 

3. After discharge, MV LIAMARE returns to Norway to embark the next load of rock. During this period, the barge SELINA, together with escorting tugs, will moor in Ryde Roads or south of the North Sturbridge buoy. The moored vessels will remain attached, will be suitably lit, and manned at all times. Unloading operations will continue as soon as MV LIAMARE returns. In inclement weather, alternative, more sheltered locations may be used.

4. The positions of the rock dumps will be marked by a series of 5 lit yellow special marker buoys. A separate KHM NAVWARN will be issued with positions and light characteristics when these buoys are laid. Mariners are warned not to navigate close to the shore in this area as depths may be shallower than charted during rock armour operations.

Chartlet showing approximate positions of marker buoys (not to be used for navigation)

5. During loading and unloading operations, the barge and coaster will be susceptible to wash, and all vessels are requested to pass at a safe speed and appropriate distance, minimising wake waves. During manoeuvres into position off Southsea, the barge and tugs combination will be restricted in their ability to manoeuvre, and all vessels are to keep well clear while they are engaged in approach, mooring and unmooring operations.

6. All vessels involved in this operation will keep KHM informed of progress and will monitor VHF Channels 11, 12 & 16 as necessary. The operations team plan to use VHF Channel 17 for transhipment and beach landing operations.
 
7. LNTM 35/22 is hereby superseded.