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July 26, 2026Sources cited
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Science & Nature • Aviation

Seaplane

A seaplane is a fixed-wing aircraft designed to take off from and land on water.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 26, 2026|2 min read| Fact-checked

A seaplane is a fixed-wing aircraft designed to take off from and land on water. The term usually includes both floatplanes, which use separate floats, and flying boats, which use a boat-like hull; aircraft that can operate on both water and runways are called amphibious aircraft.

Definition and terminology

A seaplane is a powered fixed-wing aircraft capable of operating on water. Sources note that the term is used broadly in North American usage and more narrowly in some British usage.

Types of seaplanes

Seaplanes are commonly grouped into floatplanes and flying boats. Floatplanes carry separate floats, while flying boats rely on a hull-shaped fuselage for buoyancy.

Amphibious aircraft

Amphibious aircraft are a subclass of seaplanes that can operate from both water and land runways. These aircraft combine water-landing capability with retractable or land-based landing gear.

History and use

Practical seaplanes appeared in the early 1910s, and the type has been used for transportation, patrol, rescue, and operations in remote areas where runways are limited.

Key facts

  • A seaplane is an aircraft that can land on and take off from water.
  • The two main types are floatplanes and flying boats.
  • Floatplanes use external floats or pontoons for buoyancy.
  • Flying boats have a hull-shaped fuselage that acts like a boat hull.
  • Some seaplanes are amphibious, meaning they can also use land runways.
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Canadian context

Seaplanes are especially relevant in Canada because they are widely used in regions with many lakes, rivers, coastal communities, and limited road access, including passenger transport, charter services, and remote-area operations.

Frequently asked questions

What is a seaplane?
A seaplane is a fixed-wing aircraft designed to take off from and land on water.
What are the main types of seaplanes?
The two main types are floatplanes and flying boats.
What is the difference between a floatplane and a flying boat?
A floatplane uses separate floats attached to the aircraft, while a flying boat has a hull-shaped fuselage that floats like a boat.
What is an amphibious aircraft?
An amphibious aircraft is a seaplane that can operate from both water and conventional runways.
Do all seaplanes mean the same thing in every country?
No. In some British usage, “seaplane” is used more narrowly to mean a floatplane.

References

  1. Encyclopaedia Britannica — https://www.britannica.com/technology/seaplane
    Supports: Definition of seaplane; distinction between floatplanes and flying boats; early practical seaplanes.
  2. Wikipedia — https://en.wikipedia.org/wiki/Seaplane
    Supports: General classification of seaplanes into floatplanes, flying boats, and amphibious aircraft; note on British vs. US usage.
  3. Dictionary.com — https://www.dictionary.com/browse/seaplane
    Supports: Definition and alternate naming/usage.
  4. Merriam-Webster — https://www.merriam-webster.com/dictionary/seaplane
    Supports: Concise dictionary definition of seaplane.
  5. Federal Aviation Administration — https://www.faa.gov/sites/faa.gov/files/regulations_policies/handbooks_manuals/aviation/seaplane_handbook/faa-h-8083-23-2.pdf
    Supports: Certification-oriented definition; main seaplane types in aviation guidance.