I prefer the first one. I think the silhouettes of both ships and the sword work well together.
Actually now that I look at it again, after reading the comments, I perfer the second one. Yes, this is my final answer.
The sword more clearly represents the topic. Our focus is more on it. I can imagine reaching out and picking this sword up, as opposed to the first one looking like it's on display. (It was on display, but in a completely different setting.) I like the colour scheme too. I don't find it too contrast-y. It is almost sepia in colour. This works well with the history aspect of the sword.
But what is with Jack? He's either got his tuque rolled up or something protruding from his head. What's with the arms all forshortened and at weird angles? Sorry, but not a big fan of this silhouette.
Overall, I like the covers.
Stephanie