From the introduction:
It is March 19, 1342 (First Tuesday After the Passion, 16 Edward III). The characters are natives of the city of Great Yarmouth (Magna Jernemuth) on the eastern coast of Norfolk. Edward III is King of England, and although the economy is unstable because of the war in France, the Norfolk coast is kept prosperous by active merchants who are involved in trade, smuggling and even piracy.
This text-only adventure was published on the internet in 1991. It was intended for use with the Ysgarth, To Challenge Tomorrow, or Advanced Dungeons & Dragons games but could be easily adapted to nearly any role-playing system. The adventure was re-worked and re-published in 2002 for Oroborus - see Robbers of the Sea.