Blimps yes
Zeppelins: large air ships used by Germany to bomb Britain. Very vulnerable to attack.
Zeppelins were developed but not widely used then.
These ships could carry 2,000 kg of bombs in total.
Zeppelins, filled with hydrogen gas at first, making them highly flammable.
People in the 1930s traveled mostly by hover cars and acconsionly by rocket ships..
During World War I, Zeppelins -- or, air-ships -- were utilized mainly by Germany in a variety of ways. To some extent, they were utilized for scouting and intimidation purposes. They were also used to bomb the cities and industry of the enemy -- far behind the front-lines of the ground forces involved.
Airships are also, and more commonly, known as zeppelins. The term airship is also used to refer to an airplane, but this usage is incorrect, as they have two different meanings. Airships might also be called blimps or dirigibles.
There are about 80,000 ocean-going ships in the world.
"Liberty ships" .
4 ships were torpedoed in World War 1.
Ships help to move products across the world oceans.
9,535 ships as of 2010, according to Wikipedia.