Marina websites often given good navigational information concerning their relevant port/harbour.
Royal Clarence Marina, Gosport
River Hamble Harbour Authority
Lymington Harbour Commissioners
Yarmouth Harbour
Premier Marinas have branded boats for sale including Elan yachts, Island Packet yachts, and Cranchi boats. Visit and buy the boat of your choice.
The MDL site covers:
Queen Anne's Battery (Plymouth), Brixham Marina, Torquay Marina; Cobb's Quay (Poole), Hythe Marina Village, Ocean Marina Village , Shamrock Quay (Southampton); Hamble Point, Port Hamble, Mercury Yacht Harbour, Northney Marina (Chichester); Bray Marina, Windsor Marina, Ponton Hook Marina (all on the Thames); Chatham Maritime Marina, Woolverstone Marina.
Guernsey Harbour Authority - navigational and other info.
Inshore Waters Forecast from the Met Office.
UK wind map - an excellent site showing current wind strengths over the UK.
Synoptic chart - from the Met Office - via Germany!
Infra Red Satellite imageThe Huzar 30!
EM Yachts website, and their UK agents, Simply Yachts.