Hi John
Think I may have posted this before but it is easy to miss things. To post a web link do the following:
1. Visit the site you are interested in.
2. Highlight the exact details in the browser address bar: In this case: " http://www.marinetraffic.com/ais/"
3. To insert into your posting choose and type a word or words such as MARINE TRAFFIC
4. Highlight MARINE TRAFFIC.
5.Make it Bold and Underline plus recolour text if you desire
6 Find the

button above (below the smilie face) click on it and paste your web site address from #2
7.Before posting it is always worth doing a post preview to ensure your Hyperlink works.
So in this case your hyperlink would look something like this:
MARINE TRAFFIC