[quote=Callthecops]
If he doesn't care about mortals why does he patrol the seas, keeping all life safe? I'd imagine he'd just go on to Neyav?
[/quote]

Didn't think someone one would pick up on this. 
It's intentionally paradoxical, but you weren't suppose to learn of Tinty's personality until later. 

It'll make sense about halfway through the story. Assuming we get that far.