HD-4
Sign in to saveHD-4 or Hydrodome number 4 was an early research hydrofoil watercraft developed by the scientist Alexander Graham Bell. It was designed and built at the Bell Boatyard on Bell's Beinn Bhreagh estate near Baddeck, Nova Scotia. In 1919, it set a world marine speed record of .
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- 1919-00-00
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- 1919-00-00
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HD-4 or Hydrodome number 4 was an early research hydrofoil watercraft developed by the scientist Alexander Graham Bell. It was designed and built at the Bell Boatyard on Bell's Beinn Bhreagh estate near Baddeck, Nova Scotia. In 1919, it set a world marine speed record of .
== History ==
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Baddeck
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Bras d'Or Lake
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Beinn Bhreagh
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Q5498980
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World War I
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Alexander Graham Bell
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dictation machine
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hydrofoil
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phonograph cylinder
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Photophone
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