What is the world's largest fish?
The harmless whale shark holds the title of largest fish, with the record being a 59 footer captured in Thailand in 1919.
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- What is a gyrocompass?
“A gyrocompass, invented in the early 1900s, uses a spinning wheel to find true north and isn't affected by magnetism, which makes it useful on steel ships.”
Reference: Encyclopaedia Britannica
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