The first style is a standard, not too interesting ship design. It's the one that you'll see mainly in the released videos, and will be the first one that you'll ride on. The upgrades of the ship include -
A regular prow that'll be found at the front of the ship.
The anchor will come equipped with the ship.
The original hull that comes with the ship.
A large cannon that can be installed on your ship for 50 Rupees.
A handrail on the ship - Be sure to hang on!
This is where you'll be the whole time. The bridge is a common style.
The normal chimney came installed on Linebeck's ship.
A standard paddle wheel that came with Linebeck's ship.
The second style looks like a ship from Hell. It features demon like qualities and spooky additions.
A prow that has the face of a demon.
A sickle that is made from a sickle, or at least inspired by one.
A ship that is said to carry many evils.
A cannon that can presumably fire pure malice.
While the word "handrail" is in the title, it's suggested that you don't grasp onto this.
This is mainly where you'll be, though it was originally designed to hold demons.
A Chimney made of magma.
A paddle that was made from the shell of a red insect.
This one's a lot more peaceful than the previous one, and features plenty of different colors.
A broken prow that nobody can fix.
A very powerful anchor that can hold a ship through almost anything.
Don't mistake this for a strong hull - because it isn't!
A nice cannon that you can add to this boat style.
A handrail with strong chains - won't break easily!
The bridge for the boat, has a nice red roof with golden sculptures.
A chimney made of iron. Caution: Gets very hot when used!
Some say that the wheel was made from a battleship screw.
The fourth style is an amazing mechanical/metal ship.
It looks like drill, though it's just to intimidate your enemies.
An anchor in the shape of a bell.
A modified hull that was once found on a regular ship.
A menacing cannon that's featured in the style 4 category.
Another chain handrail.
The bridge for this ship. Go here for a nice rest during battle... wait, what?
A simple chimney with a bell shaped top.
The wheel for your ship with plenty of paddles to go along with it.