It's thought that Archimedes, the ancient Greek scientist, used lodestone to pull nails from enemy ships in war to make them collapse and sink.
Mainly u-boats, other enemy ships and enemy bombers
When it was first invented, it was intended to draw water out of Greek ships. However, it was later used for irrigation.
Archimedes made many things. He made (invented) the Archimedes screw which helps farmers with their irrigation. He also supposedly made Archimedes Death Ray (which is a myth) and Archimedes Claw which is said unrealistic by modern engineers.
ships were important as if the enemy is by the sea they can attack with the element of surprise.
Archimedes is purported to have used loadstones to remove nails from enemy ships thus sinking them.
Archimedes invented a device to set fire to ships. This used mirrors to focus the rays of the sun on the ships which were attacking the city.
It's thought that Archimedes, the ancient Greek scientist, used lodestone to pull nails from enemy ships in war to make them collapse and sink.
Ships
Archimedes principal explains buoyancy. The principle makes its use in ships and submarines.
a large weight drops flinging the claw to grap ships
public enemy - burn Hollywood burn
One invention Archimedes invented is the Archimedes Screw. It's still used today to irrigate crops.
Mainly u-boats, other enemy ships and enemy bombers
Ironclads could destroy wooden enemy ships using either cannon fire or by ramming them.
Other way around: A blockade tries to prevent enemy ships from passing
it reflected the sun's rays and burned ships