History of Sonar

First experiment similar to sonar.

Jan 1, 1822

SourceDaniel Colloden used an underwater bell to calculate the speed of sound at Lake Geneva, Switzerland. This led to other inventors experimenting with sonar.

Sonar

Period: Jan 1, 1822 to Apr 29, 1945

First sonar is created

Jan 1, 1906

SourceLewis Nixon created the first sonar listening device to detect icebergs.

Robert Boyle is hured by U of A president to create sonar.

Jan 1, 1912

Source Robert Boyle is recruited to create a sonar device, and beats all other countries in doing so.

World War One starts

Jul 28, 1914

SourceSonar was needed to detect enemy submarines.

First Submarine- Detecting Sonar

Jan 1, 1915

SoursePaul Langévin invented the first sonar device to detect enemy submarines in World War One. Although this sonar did not send out signals, it could still detect submarines by using the piezoelectric properties of the quartz. Thissent out electricity that detected objects,

U.S.A and Great Britain establish sonar systems

Jan 1, 1918

Source Great Britain and the United States create the first sonars to send out signals to detect enemy submaarines.

Sonar helps in defeating Germany in the Battle of Britain

Jan 1, 1940

SourceSonars istalled along the coast of southern Britain detect enemy fighters and allow Britain to concentrate their defense on that side.

Sonar helps destroy German submarines

Jan 1, 1941

Source Sonar helped detect enemy submarines, so the allies could defend shipping lines and resources.

U.S. subs destroy sipments of supplies, closing Japanese factories

Jan 1, 1942

Source Sonar helped the U.S. subs find freighters and destroy them.

U.S.S.Pollack sinks Japanese freighter

Jan 7, 1942

Source This victory was a result of sonar picking up a lone freighter in the water. This is a first of many sinkings due to sonar.

U.S. subs account for 60% of ships sunk with the help of sonar

Jan 1, 1945

Source By the end of the war, submarines destroyed 60% of sunken ships, but make up less than 2% of the U.S. fleet. They were able to locate ships easily with sonar installed into them.