It's better for you to go by boat than by train.
Are you going by boat or by plane?
It's faster to go by plane than by boat.
It's much faster to go by plane than by boat.
Go by ship, then. But it takes quite a few days.
Do I need a reservation to go by ship?
It is cheaper to go there by boat.
Some people cannot bear travelling by sea.
Shall we go for a sail?
traveling around something (by ship or plane).
He travelled on ships and looked after the sailors.
He would go there in a boat soon.
Are visitors allowed to come on board?
He journeyed in a vessel/on a mule etc.
Let's go for a turn in the boat.
Let's go by water this time.
Let's take a boat to enjoy the cool breeze on the lake.
I'm terrified of flying I'd rather go by sea.