This book reminded me very much of [b:Quarter Share|2334538|Quarter Share (Golden Age of the Solar Clipper, #1)|Nathan Lowell|https://d.gr-assets.com/books/1273808382s/2334538.jpg|2341114] by Nathan Lowell. They were both about a naive young man who joins the crew of a space ship with no experience and who quickly learns a lot about himself and his capabilities. Of course, Travis joins a war ship while Ishmail joins a trader, so the level of danger is very different. And their personalities are not very similar. But the general thrust of the plots seemed similar.
That's not necessarily a bad thing. I enjoyed both books and will likely read this one again, as I have Quarter Share.
I'm particularly glad to have a new Honorverse series starting.