Leviathans Lieutenant’s Manual Revised And Now Free

Leviathans is the game of turn-of-the-century (last century, 1910ish) ship-to-ship combat in the sky. Personally, I'm more a fan of swashbuckling sky pirates rather than Imperial Navies. I'm willing to bet there's room for mercenaries and rogue nations in the world of Leviathans.
http://monstersinthesky.com/2011/05/26/leviathans-lieutenants-manual-qsr-pdf-revised-and-now-free/