Class
what its used for
100

Small amorments, torpedo launchers, small ship, quick

what is destroyer

100

normally in the middle of the fleet carries lots of planes to launch and hurt the enemy

what is aircraft carrier

200

small amounts of amorments, generally used for moving things, 

what is transport ship

200

normally used to transport/move items and tanks/trucks across the ocean

what is transport ship

300

high speeds, and long range in-between two other classes of ships

what is cruiser

300

normally used for long range bombardments used during d-day to take out bunkers

what is battleship

400

slow speeds but long ranges and strong armor

what is battleship

400

normally used to escort other ships 

what is destroyer

1000

used to launch and carry planes mainly used in the pacific front

what is aircraft carrier

1000

used for patrols, convoy escorts, scouting and, shell bombardment

what is crusier

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