Sea Reach - Cathodic Protection Installation Works at London Gateway Port

Mariners are advised that from the 24th March 2025, cathodic protection installation operations will take place on the eastern 50 metres of London Gateway berth 4.   

Cathodic protection works will involve divers from the quayside only.  

When diving is taking place, the following signals will be displayed in a prominent location on the quayside:  

• By day, International Code Flags ‘Romeo Yankee (RY)’, ‘Alpha (A)’ and a red flag near the diver’s point of entry into the water   
• By night, illuminated rigid replicas of the International Code Flags ‘Romeo Yankee (RY)’ and ‘Alpha (A)’ 

Requirements to proceed with caution or at slow speed will be made in accordance with the procedure set out in the Port of London Authority’s Port Information Guide, under ‘London VTS’, ‘Section 4’.  

During these operations, vessels may only berth on the western 326-366m of berth 4  

All vessels are required to maintain the following criteria/exclusion zones:  

• No divers will be in the water whilst vessels manoeuvring on or off Berth 3 or Berth 4. 
• 40m exclusion zone to be maintained between vessels moored on Berths 3 & 4.  

All participating vessels will maintain a listening watch on VHF Channel 68 and will remain in direct contact with the London Gateway Harbour Master and shift managers.  

Mariners are urged to exercise caution and remain vigilant while navigating in the vicinity of London Gateway. For further information, please contact London VTS at 01474 562215.