To be fair, they're his ships, he can name them whatever he wants.
Though if he wants them to be more FS cannon-like he could adopt a naming scheme based on mythology rather than weaponry. There are far more mythologies on the world than simply greek, egyptian and hindu.
If you want some Tiger-ish, what about something African? They will also be names which people don't really know about. Here's a start:
http://www.godchecker.com/pantheon/african-mythology.php?_gods-list I dunno where the hell Tigers live, but when I think big cats I think of them roaming the fields of Africa taking down gazelles and wildebeast and whatever else. And, not to come off as an ignorant a**hole, but the overall darker textures of your ships could be more indicative of Afrika.
Edited - for censorship since the bad word filter doesn't seem to pick up on that
