Links given in this frame require a connection to the internet. No guarantee is given that the links still exist. This allows the user to follow up material related to the particular lecture, such as on-line real time data channels, tidal forecasts, web cameras located at sites of oceanographic interest and many more. The warning that some of the links may be defunct is necessary since the CD cannot be updated in the same manner as its associated web site, where broken links can be removed or amended. The list is displayed in the bottom frame.
Some exercises make use of ocean-wide data bases found on the web.
To begin with, developing all material in dual track has the advantage to keep development time low for the CD because it is a natural by-product of the process. Adapting a web site designed for continuous web access to an autonomous CD is a huge task. It involves hundreds of decisions which links to keep, which links to emulate and which links to eliminate. Hopefully, the economic situation in developing countries will soon reach a level where a continuous fast connection to the internet will become a reality. Use of the CD version will then become less and less a necessity and can be replaced by the on-line use of the site.