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  • Navigating
    at Sea
    • Challenges of Sea Navigation
    • Navigating Without a Clock
    • The Longitude Problem
    • The U.S. Goes to Sea
    • Navigate at Sea! Activity
  • Navigating
    in the Air
    • Challenges of Air Navigation
    • Early Air Navigators
    • Navigation at War
    • Navigate the Skies! Activity
  • Navigating
    in Space
    • Challenges of Space Navigation
    • Reaching for the Moon
    • Navigating in Deep Space
    • Navigate in Space! Activity
  • Satellite Navigation
    • Challenges of Satellite Navigation
    • Reliable Global Navigation
    • Global Positioning System (GPS)
    • Who Uses Satellite Navigation
  • Navigation
    for Everyone
    • Meet a Professional Navigator
    • Personal Navigation Stories
  • Timeline of Innovation
  • Artifacts
  • Learning Resources
  • Multimedia Gallery
  • Research
  • Visit the Exhibition

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Time and Navigation Home
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Time and Navigation
The untold story of getting from here to there.
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  • Navigating at Sea
  • Navigating in the Air
  • Navigating in Space
  • Satellite Navigation
  • Navigation for Everyone
  • Timeline of Innovation
  • Artifacts
  • Learning Resources
  • Multimedia Gallery
  • Research Journal
  • Visit the Exhibition
  • Challenges of Air Navigation
    • Flying Boats Cross the Seas
    • Overcoming the Challenges
      • Celestial Navigation
      • Radio Navigation
      • Dead Reckoning
    • Navigate the Skies! Activity
  • Early Air Navigators
    • Dying to Set Records
    • Charles Lindbergh's Calculated Risk
    • The Business of Air Navigation
      • The Teacher: P. V. H. Weems
      • The Air Navigation Community
      • Radio Time for Aviation
    • Lindbergh's New Tools
    • Two Men in a Hurry
      • The Winnie Mae
      • Meet the Navigator: Harold Gatty
    • Navigation Gone Wrong: Amelia Earhart
  • Navigation at War
    • The Wartime Navigator
      • Harry Crosby
      • Tools of the Trade
    • Naval Aviation
      • Meet the Navigators: WAVES
    • A New Era in Time and Navigation
      • Hyperbolic Systems
      • LORAN
      • Meet the Clockmaker: Alfred Loomis
  • Navigate the Skies! Activity

Did You Know?

The first attempt to fly to Hawaii from the mainland United States, in 1925, resulted in a fight for survival and an amazing feat of navigation and seamanship.

Explore More

Clarence Chamberlin and Charles Levine »
Longines Lindbergh Hour Angle Watch »
Mark IB Astrograph »
Bausch and Lomb Model A Bubble Sextant »
B-17s in Formation »

Flying Boats Cross the Seas

Flying boats spearheaded aerial exploration and overseas transport in the 1920s and ’30s and opened the era of regular transoceanic flights.

Although landplanes and airships had the range to cross oceans, explorers, airlines, and military aircrews often preferred flying boats. With runways few and far between in most countries, flying boats could land in almost any sheltered stretch of water. They also made in-flight emergencies over the open ocean much more survivable. Still, navigating across an ocean in any type of aircraft was difficult and often perilous.

Why Did Nations Take the Risk?

Many nations took on the challenge of navigating across the ocean by air. Between the world wars, the United States and many European countries competed for national prestige by setting new transoceanic records, establishing overseas airline service, connecting colonial possessions, and demonstrating military power.

In peacetime, these achievements showed how far aviation had come in only a few years. But as war broke out again, the ability to cross oceans by air meant that no nation was safe from attack.

 

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Dornier Do R4 Superwal I-RIDE, 1/20 Scale
In the early 1930s, this type was proposed (unsuccessfully) for the first regular commercial transatlantic service.
Credit: National Air and Space Museum, Smithsonian Institution.

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PN-9 Crippled after Nine Days Adrift
The PN-9 after "sailing" to Hawaii.
Credit: National Air and Space Museum, Smithsonian Institution.

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Naval Aircraft Factory PN-9, 1/16 Scale
Cmdr. John Rodgers and his crew spent nine days adrift at sea in this aircraft after failing to rendezvous with a refueling ship.
Credit: National Air and Space Museum, Smithsonian Institution.

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S.I.A.I. S.55A (Italy)
From the mid-1920s to the mid-1930s, the Italian-built twin-hulled S.55 was one of the most common crossers of the Atlantic.
Credit: National Air and Space Museum, Smithsonian Institution.

dornier_doj_-_nasm-1a37122.jpg

Dornier Do J Wal (Germany)
The rugged "whale" was perhaps the most internationally popular of the interwar flying boats for transoceanic flights and polar exploration.
Credit: National Air and Space Museum, Smithsonian Institution.

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Martin M-130 (USA)
Used in pioneering trans-Pacific airline service by Pan American Airways.
Credit: National Air and Space Museum, Smithsonian Institution.

310-latecoere_521_-_xra-4725qm-duo.jpg

Latécoère 521 Lieutenant de Vaisseau Paris (France)
This "one-off" record-setting airliner showcased French engineering expertise on a range of transatlantic flights in the late 1930s.
Credit: National Air and Space Museum, Smithsonian Institution.

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Kawanishi H6K (Japan)
Japan's airline routes were closely tied to military goals, as were the aircraft they selected, such as the H6K, which became a patrol bomber in World War II.
Credit: National Air and Space Museum, Smithsonian Institution.
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  • Navigating at Sea
    • Challenges of Sea Navigation
    • Navigating Without a Clock
    • The Longitude Problem
    • The U.S. Goes to Sea
    • Navigate at Sea! Activity
  • Navigating in the Air
    • Challenges of Air Navigation
      • Flying Boats Cross the Seas
      • Overcoming the Challenges
      • Navigate the Skies! Activity
    • Early Air Navigators
    • Navigation at War
    • Navigate the Skies! Activity
  • Navigating in Space
    • Challenges of Space Navigation
    • Reaching for the Moon
    • Navigating in Deep Space
    • Navigate in Space! Activity
  • Satellite Navigation
    • Challenges of Satellite Navigation
    • Reliable Global Navigation
    • Global Positioning System (GPS)
    • Who Uses Satellite Navigation
  • Navigation for Everyone
    • Meet a Professional Navigator
    • Personal Navigation Stories
  • Timeline of Innovation
  • Artifacts
  • Learning Resources
  • Multimedia Gallery
  • Research
  • Visit the Exhibition
  • Terms of Use
  • Privacy
  • Contact
  • Sponsors
  • Press
  • Donate
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