Tell me about it.
All of the ships need a 3+ save. Because as it stands, anything anyone throws at them sticks. Sure there’s ways to heal them but that requires a bit of luck to stay ahead of the damage.
The warships should be incredibly durable, because they’re, well, warships. Great big armour plated sturdily built things. But right now, as it stands, an Ironclad, our toughest ship, is about as tough as a mid sized unit of blood warriors. And that is poor.
Give them all a 3+ save and make their tireless endrinrigger ability automatic. Now they’d be on par with those super though units like...well, Dracoths always seem invincible to me.
Our lists are only ever going to have a few ships in them at most. So they absolutely have to be able to survive more than one turn of damage.