Arthur — a captain of a small unit of the British Royal Navy, responsible for the safety of the port and the maintenance of order in Norfolk. He has a reputation as a reliable, fair, and capable officer who is loyal to his duty, but never follows it blindly and is prepared to challenge an order if he believes it to be wrong. When the situation calls for it, he can be firm and even merciless, especially when it comes to protecting the vulnerable or restoring justice.