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The Royal Norwegian Navy: Underwater Acoustic Measurements

The Royal Norwegian Navy, NORWAY


A vessel’s acoustic signature provides recognition to friends and enemies alike. The acoustic range at Heggernes in Norway measures all types of NATO naval vessels – one of only a few facilities in the world capable of these studies. And Brüel & Kjær plays a key role.

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In order to characterize the acoustic signature of NATO submarines and surface vessels, the Heggernes range needs to perform two types of acoustic ranging tests: static and dynamic. Reliability and accuracy are essential and depend first and foremost on the quality of the hydrophones and acquisition software.

The Brüel & Kjær Underwater Acoustic Ranging System (UARS) provides an integrated solution supporting navies with the task of managing and maintaining the acoustic stealth of their submarine and surface fleet. Coupled with highly customized PULSE software, the data-collection process is not just accurate, but also highly automated.


The unquestionable quality of the data allows better comparison of vessels in the water with their specifications on paper. According to Kjell Johnsen of the Royal Norwegian Navy, “When we tell them that we use Brüel & Kjær, there are no discussions concerning the accuracy of the data.”

The Royal Norwegian Navy

Norway is an Arctic maritime nation and highly dependent on free access to the sea.

Through processing and sale of natural resources like oil, gas and fish, Norway has become one of the wealthiest countries in the world. This has allowed Norway to create a sophisticated welfare state, ensuring all Norwegians social security and equal rights.

The Royal Norwegian Navy protects our values and ensures Norway free access to sea by protecting, surveilling and controlling our coastline and our waters. The Navy is led by the Chief of the Navy based at Haakonsvern Naval Base in Bergen.

About The Royal Norwegian Navy

The Royal Norwegian Navy logo