I second Val in that I think the sub needs section headings. While on the whole I find the sub not hard to read in that each paragraph is short, it really needs sub-headings so you can separate out different content and make the piece flow. My suggestion is to break it up into the following sections: Description; Offense Capabilities- Man Power (I can't think of a better term but basically I mean fighting b/w marines); Offense apabilities- Cannons; Engagement/Communication with other ships; the Navy and its Fighting History.
Hope that helps.
