Norwegian Sonar Equipment from the 1950s to 1970s

I am continuing covering my visit to the naval museum in Horten, Norway. Previously I wrote about teleprinters used for foreign communications and for secure communications by Norwegian police.

A well know maritime technology company in Norway, Simrad (presently part of Kongsberg Maritime, was based in Horten and built echolocation and sonar equipment. The first echo sounder was invented by Norwegian Hans Sundt Berggraf from Stavanger. However as seems typical for any technology invention in Norway he could not obtain money to patent it. So German Alexander Behm patented it several years later.

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Echo Sounder

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Sonar

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HPR Hydro acoustic Position Reference System

Simard developed this Hydro acoustic positioning system from 1975 and had significant commercial success from it. It was important for Norwegian offshore oil industry which they had just started building in the 70s.

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Radio telephone

Other Equipment

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Geek dad, living in Oslo, Norway with passion for UX, Julia programming, science, teaching, reading and writing.

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