Just wondering, why no imperial warships? Wouldn't you think instead of all these pirate and trading vessels there would be warships there to protect them and the harbour... I'm sure they wouldn't though care that much pertaining to the pirates.
What's the lore on sea combat and security for the empire of Tamriel?
Muthsera,
Adanorcil is correct, the devs could not represent everything, and yes, there is quite a bit of lore concerning the Imperial navy. Most of this lore is contained in http://www.imperial-library.info/tsorg/.
Also, a few lines from http://www.imperial-library.info/obbooks/ionith.shtml are worth noting: "
A new Far East Fleet was created for the campaign, which for a time dwarfed the rest of the Navy; it is said to be the most powerful fleet ever assembled in the history of Tamriel. The Fifth, Seventh, Tenth, and Fourteenth Legions were selected for the initial landing, with the Ninth and Seventeenth to follow as reinforcements once the beachhead was secured. ... Perhaps most crucially, the Navy had only enough heavy transport capacity to move four legions at a time."
I am sure that there are more texts addressing your issue, however such a presentation will have to wait, for I must be off. Until we meet again, I remain...
Yours in the Scrolls,
___The Word Merchant of Julianos