Vessel
The opposite of a large ship could be a small boat.
Another word for a ship's small boat is "dinghy." Dinghies are often used for various purposes, including transporting people and supplies to and from larger vessels or serving as lifeboats in emergencies.
Cargo ship or freighter are synonyms for container ship.
A liquid can also be referred to as a fluid.
Ship.
voyage
Vessel
Vessel
In punctuation, it can be a hyphen. In sport it can be a sprint. It can also mean a small amount of liquid put into a larger drink.
Another word for a small valley is a dell.
Yes, another word for a ship's prison is "brig." It is a nautical term commonly used to refer to the place on a ship where prisoners or troublemakers are confined.
A berth.