Mr Carcharodon
Contributor
Oh you want a web based electronic table? There are none that I am aware of. You can get copies of several different tables on the web. Several are from government agencies (US Navy and NOAA) and do not have copyrights. As far as requirements to use certain tables there may be requirements for a given class but beyond that you can use what you find. As already noted there are differences based on the assumptions that were made when the tables were written.