Here is a list of useful links for sea ports:

Dover
Backed by its famous White Cliffs, Dover is located in Kent, on England's southeastern tip and is the UK's closest geographical point to Continental Europe. Every day of the year, frequent cross Channel ferries travel between the port and Calais and Dunkirk in France, and Ostend in Belgium.

Dover is also a busy port for cruise shipping and a mecca for pleasure boat owners.
www.doverport.co.uk

Southampton
SPIN is the Port Community System operating in the Port of Southampton. The Community consists of all the companies and official bodies who are responsible for the orderly movement of goods through the port.
www.southamptonspin.net

Stena Line
You can use our online booking system 24 hours a day to get a price quotation or make a confirmed booking for a ferry crossing.
www.stenaline.co.uk

P & O
The P&O name has been synonymous with luxury sea travel for more than 150 years. So wherever you go with P&O Ferries, you can expect a very special service indeed.
ww8.poferries.com

Calmac
Caledonian MacBrayne provide ferry services to twenty-two islands
and four peninsulas on the West of Scotland, serving the islands'
residents and welcoming visitors from around the world.
www.calmac.co.uk