High-DPI Exult-generated map of Britain (21MB) Used with permission from Dominus Dragon
Trinsic
From the Book of the Fellowship: This active seaport south of Paws and north of the Cape of Heroes is known as the city of Honor. Trinsic is the home of Paladins and also has an active branch of The Fellowship. Travellers might question the need for the walls that surround the city. As if this would not be enough to keep the city secure, the guards of the city will not permit anyone to enter or leave the city unless they know the secret password. While this was once done to maintain the security of the city and the safety of its citizens, it is now done mostly to sustain a traditional ritual. (Britannian law forbids the open publication of Trinsic's password.)
External Maps
World maps of Britannia in Ultima 7 - The Black Gate can be found: