WEATHER 

Inshore Waters Forecast
Offshore Shipping Forecast
Online Weather
Great Weather Site
XC WEATHER -detailed forecasts

 MISCELLANEOUS

Marine Traffic Worldwide AIS data MAP and info in real-time

Yachts & Yachting
Yachting & Boating 
R N L I
East Coast Rivers.com
East Coast Rivers Updates
Marinas Database (NobleMarine)
Yacht Clubs Database (NobleMarine)
Crouch Area Yachting Federation
Boat Jumble Association
UK Sailing Index

TIDES

Admiralty 7-day UK Tide
Port of London Authority Tides
NTSLF Tidal Prediction (30 days)- Dover
NTSLF Tidal Prediction (30 days)- Sheerness

NAVIGATIONAL INFORMATION

East Coast Pilot 
Navigating the Thames PoL Site
Admiralty Notices to Mariners
Trinity House – Notices to Mariners – Southeast

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Harwich Haven Authority
Coastguard (MCA)
RYA Eastern Region Site
River Roach Links Site
The  Balanced Seas project for SouthEast England to establish bio-diversity conservation zones inshore and offshore around the coast