Why Do Ships Float?

Ever wonder why something as heavy as a cruise ship could float above the water? Learn about displacement with Jessi and The Giant Squid, Squidstravaganza!
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SOURCES:
https://van.physics.illinois.edu/qa/listing.php?id=2174

http://www.newton.dep.anl.gov/askasci/phy99/phy99x34.htm