The BIBOA website is due for updating but as the committee are a bunch of technophobes we rely on the goodwill of others do this for us!!
John has given the info you need. Let me just add that, for my sins, I am the BIBOA cruising coordinator and am always happy to answer any queries, chat about cruising or RIBs in general. Contact via rib.net , email firstname.lastname@example.org
or tel 07764 975875.