Summon your sharksucker-class insubmersible minion. Warning: do not immerse.
Built by a mammet voyager in a moment of boredom, this clockwork ship raises several questions about machine ethics by its very existence. Another, perhaps more significant question it raises is, “Why build a functioning model submersible and not make it watertight?”
How to obtain:
Voyages -- Subaquatic Voyages - Sea of Ash (E/I/K/R), Sirensong Sea (H)
Bozja -- Zadnor Lockbox
Occult Crescent -- South Horn - Bronze/Silver Coffer