The Aeromarine EO was a light sport

flying boat A flying boat is a type of fixed-winged seaplane with a hull, allowing it to land on water. It differs from a floatplane in that a flying boat's fuselage is purpose-designed for floatation and contains a hull, while floatplanes rely on fusela ...

that was built in the mid-1920s.

Design and development

The Aeromarine EO was designed as an updated replacement of the Aeromarine Model 44 for the customer Earl Dodge Osborn. Osborn was a former accountant for Aeromarine, assistant editor of Aviation magazine and future founder of

Edo Aircraft Corporation EDO Aircraft Corporation was an American aircraft manufacturing company known primarily for manufacturing pontoons for floatplanes. History The EDO Aircraft Corporation began operations on October 16, 1925 in College Point, New York. Although ...

. The aluminum hull was scaled down from the

Aeromarine AMC The Aeromarine AMC was the first American all-metal hulled commercial flying boat. Development Design work on the AMC started in 1921 with the goal of producing an aluminum-hulled flying boat that would be more durable than contemporary all-woo ...

design, offering advantages in durability, weight and the inability to become waterlogged. The EO was an open-cockpit aluminum-hulled

biplane A biplane is a fixed-wing aircraft with two main wings stacked one above the other. The first powered, controlled aeroplane to fly, the Wright Flyer, used a biplane wing arrangement, as did many aircraft in the early years of aviation. While ...

seaplane with a single tractor engine center mounted in a

nacelle A nacelle ( ) is a "streamlined body, sized according to what it contains", such as an engine, fuel, or equipment on an aircraft. When attached by a pylon entirely outside the airframe, it is sometimes called a pod, in which case it is attached ...

on the top wing which also housed the fuel tank and oil tank. The upper wing was staggered well forward of the lower wing. The wings were constructed with

spruce A spruce is a tree of the genus ''Picea'' (), a genus of about 35 species of coniferous evergreen trees in the family Pinaceae, found in the northern temperate and boreal (taiga) regions of the Earth. ''Picea'' is the sole genus in the subfami ...

I-beam

spar SPAR, originally DESPAR, styled as DE SPAR, is a Dutch multinational that provides branding, supplies and support services for independently owned and operated food retail stores. It was founded in the Netherlands in 1932, by Adriaan van Well, ...

s and

ribs The rib cage, as an enclosure that comprises the ribs, vertebral column and sternum in the thorax of most vertebrates, protects vital organs such as the heart, lungs and great vessels. The sternum, together known as the thoracic cage, is a semi- ...

with

aircraft fabric covering Aircraft fabric covering is a term used for both the material used and the process of covering aircraft open structures. It is also used for reinforcing closed plywood structures. The de Havilland Mosquito is an example of this technique, as ar ...

. The hull was built with four watertight compartments. The tip floats were all-aluminum. A cross-through tube accepted a wheel assembly for ground movement.

Operational history

The first flight tests were performed by Osborn in June 1924. The sole EO was used for demonstration flights for the EDO company. It then transferred ownership several times with a planned flight to Puerto Rico. It was listed as "Washed Out" at

Cape May, New Jersey Cape May is a city located at the southern tip of Cape May Peninsula in Cape May County, New Jersey, United States, where the Delaware Bay meets the Atlantic Ocean. It is one of the country's oldest vacation resort destinations, and part of th ...

and its registration was cancelled on 21 January 1932.

Specifications (Aeromarine EO)

References

External links

Image of an Aeromarine EO
{{Aeromarine Flying boats EO Single-engined tractor aircraft Biplanes 1920s United States civil aircraft