Wikipedia on GPS
A good source of information on GPS
Historical articles on the Top Hat Yachts
http://www.sailblogs.com/member/seaka
The 5 month voyage, in 2011, to Queensland and return from New South Wales in a Mark 1 Top Hat. This single handed voyage was undertaken by member Phillip.
Hawkesbury River Yacht Club -
A long time supporter of the Top Hat Yachts organisation, the HRYC regularly invites our members to participate in race days and other events.
http://members.sailnet.com/messageboard -
A US based site,the message forums are great sources of sailing information,with many knowledgeable regular contributors
http://www.cruisersforum.com -
A cruisers message forum, with an international feel.