I'm currently in the early stages of working out the likely might, wealth, and influence of a small duchy for plotting purposes in my fantasy (14th/15th century-ish tech) story. Here are some key notes you might need in order to better answer the thread's question. (1) The total population of the duchy is just under 40k (2) It's located on an island roughly the size of Jamaica (3) The reigning duchess is considerably wealthy, as she owns numerous profitable enterprises, the largest of which is a shipping company that operates in something comparable to the Mediterranean Sea (4) the duchy's primary military obligation to its monarch (who resides on the same island) has been, and continues to be, naval support My questions to you are: how many warships might the duchess currently have? How many cargo ships might her trading company have? If you need more information I'll provide you with what I can. But keep in mind, this story is just coming out of my early brainstorm phase.