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New scientific paper: "Broadband backscattering by Atlantic herring (Clupea harengus L.) differs when measured from a research vessel vs. a silent uncrewed surface vehicle" (open access)

In CRIMAC, we work on improving the ability to distinguish between different fish species using broadband echo sounders. But how is the broadband response (the echo) of herring affected when it reacts to a research vessel? And does this behavior have...
03.05.2024

Publications

30.04.2024

CRIMAC annual report 2023

CRIMAC annual report 2023 is now published. Read it here.
30.04.2024

CRIMAC contributions to the ICES WGFAST meeting

The meeting was organized by the ICES Working Group on fisheries acoustics, science and technology. The meeting was hosted by IRD and IFREMER in Brest. The WGFAST community is an excellent venue for presenting and discussing topics related to fisheries...
23.04.2024

PhD Student Attends GAMM 2024 Conference in Magdeburg, Germany

The 94th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM) was hosted by Otto von Guericke University Magdeburg. From March 18 to March 22, 2024, mathematicians, engineers, and scientists from around the world...
05.04.2024

New Paper: ‘Addressing class imbalance in deep learning for acoustic target classification’

We published our new paper discussing a method to improve the performance of deep convolutional neural networks for acoustic target classification. Our paper addresses the challenge of class imbalance in the sampling of training and validation data, leading...
05.04.2024

CodeLab

CodeLab is a small software company specializing in advanced software development for marine science, energy sector, and health.
05.04.2024

Norway Royal Salmon ASA

Salmar ASA is a Norwegian aquaculture company listed on the Oslo Euronext. Our product is Atlantic salmon, and we have aquaculture activities in Norway, Scotland, and the Westfjords of Iceland. Salmar is the worlds second-largest producer of Atlantic...
05.04.2024

EROS

EROS AS is a fishing company based in Fosnavaag with a history going back to 1917. Todays «Eros» is the seventh carrying the same name. The vessel is a 77 metre modern pelagic trawler/purse seiner fishing for Herring, Mackerel, Capelin and Blue Whiting...
05.04.2024

Liegruppen

Liegruppen, located in Øygarden outside the city of Bergen has been in the fishing industry for more than 120 years. Liegruppen has throughout its history always had a strong focus on development and innovation in fisheries as well as in vessel construction....
05.04.2024

Scantrol and Scantrol Deep Vision

Scantrol AS and Scantrol Deep Vision AS are located in Bergen, Norway. Scantrol has delivered control systems to trawls and cranes all over the world for more than three decades and has an extensive experience with developing technology for the marine...
05.04.2024

Kongsberg Discovery

Kongsberg Discovery specializes in cutting-edge technology that provides vital insights and key data about life in the oceans and ecosystem conditions. From shallow water wind farms to the deepest oceans, we offer a comprehensive range of systems for...
05.04.2024

The University of Bergen does research and educate master- and PhD-candidates

The University of Bergen is a world leading university in marine science and technology. UoB participates in CRIMAC with three departments: the Department of Biological Sciences, the Department of Physics and Technology, and the Department of Mathematics....
05.04.2024

The Norwegian Computing Center (NR)

The Norwegian Computing Center (NR) conducts research and is one of Europes largest environments within statistical modeling and machine learning. We carry out research assignments for Norwegian and international business, the public sector and within...
05.04.2024

NORCE contributes with expertise in IT and acoustics

NORCE is an independent research institute with around 750 employees that undertakes research for both the public and the private sector. NORCE has a long tradition for cooperation with IMR, UiB and KM within the topic of SFI CRIMAC, due to a strong competence...
05.04.2024

The Institute of Marine Research is leading the center

The Institute of Marine Research is one of the largest marine research institutes in Europe with approximately one thousand employees. Our main activities are monitoring, research, and advice for the marine environment. 
05.04.2024

Cruise report from the CRIMAC cruise with RV «G.O. Sars» November 2023

This cruise report describes the objectives, methods, and preliminary results from the tasks carried out at the CRIMAC SFI survey. The survey was conducted on board RV G.O. Sars between November 15th (Tromsø) and November 21st (Tromsø); in the fjords...
18.03.2024

Contact us

14.02.2024

Image Archive

03.01.2022

Norwegian

15.02.2024

Partners

14.02.2024

News

14.02.2024

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14.02.2024

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14.02.2024

About CRIMAC

CRIMAC will improve and automate the interpretation of data and images from modern broadband acoustics on research vessels and fishing boats by using cruises and experimental field research, artificial intelligence, drones and inspection technology.
09.02.2024

Resources

This page contains links to resources used by the centre.  
09.02.2024

Frontpage

09.02.2024

CRIMAC

09.02.2024

Studying the Twilight Zone of a Norwegian Fjord

Norway’s fjords are ideal for studying the ocean. They’re calm, deep, have consistent populations of interesting marine creatures, and there’s still a lot to learn about them. Every year, Professor Anne Gro Vea Salvanes from @UniBergen takes students...
09.01.2024

New paper: “Quantitative processing of broadband data as implemented in a scientific split-beam echosounder” (open access)

How do scientific broadband echosounders work, and specifically how is the acoustic echo from a target processed to provide correct and meaningful biological and ecological insight? This is detailed in a new paper published by CRIMAC research and industry...
02.01.2024

Congratulations Dr. Dunn!

Muriel Dunn successfully defended her PhD thesis “Advancing broadband hydroacoustic methods for ecological surveys with uncrewed vehicles in the Arctic” at Memorial University December 2023. Dr. Dunn was a PhD student at Memorial University, supervised...
02.01.2024

New paper: Machine learning algorithms demonstrate their utility in Marine Science

We published a comprehensive review of 1000 Publications showcasing ML applications in the field. CRIMAC contributed with the review of active acoustics.
02.10.2023

New CRIMAC article in Fisheries Research

New article: How to obtain clear images from in-trawl cameras near the seabed? A case study from the Barents Sea demersal fishing grounds 
25.09.2023

PhD fellowships in marine acoustics

CRIMAC has available two PhD fellowships in marine acoustics, located at Department of Physics and Technology, University of Bergen (UiB), Bergen, Norway. Both PhD fellows will collaborate closely with the Ecosystem Acoustics group at Institute of Marine...
11.09.2023

PhD Student Attends FoCM 2023 Conference in Paris, France

I am delighted to share my experience attending the Foundations of Computational Mathematics (FoCM) conference held in Paris, France. As the 9th edition of the conference, it follows a series of successful meetings that began with the idea of FoCM in...
26.06.2023

CRIMAC contributions to the ICES Fisheries and Plankton Acoustics Symposium

This year the symposium adressed the team: "From Echosounders to the Cloud: Transforming Acoustic Data to Information.”
28.04.2023

IMR: Researchers have given sonar the power to calculate the tonnes of fish in a shcool

This is good news for both fishers and fish stocks.
14.06.2021

CRIMAC August highlight

In this newsletter, project manager Nils Olav Handegard gives an overview of recent CRIMAC activities.
09.08.2021

New project manager for CRIMAC

Marine researcher Nils Olav Handegard takes the helm after Egil Ona.
21.10.2021

CRIMAC contributions to the 45th Scandinavian Symposium on Physical Acoustics

15.02.2022

Cruise report: CRIMAC SFI cruise, November 2021

The cruise report from the joint survey for CRIMAC and the IMR sampling gear project on G.O. Sars November 2021 is now published.
20.04.2022

CRIMAC on ICES working group meeting

CRIMAC had five contributions to the ICES Working Group on Fisheries Acoustics Science and Technology (WGFAST)
29.06.2022

New paper: Evaluation of echosounder data preparation strategies for modern machine learning models

Different data-preparation strategies suitable for acoustic target classification using a deep learning is tested. You will find more information here:
29.06.2022

Out now: CRIMAC Annual Report 2021

2021 was the first full year for SFI CRIMAC. Despite the pandemic, the center has been able to progress well. The annual report for 2021 is now published and can be accessed here (pdf).
30.06.2022

Early Career Scientist Conference in Canada and a tour of the Fisheries and Marine Institute of Memorial University

PhD student Taraneh Westergerling reports from her presentation at the the ICES/PICES early career scientist conference.
29.08.2022

New paper: Remote acoustic sizing of tethered fish using broadband acoustics

Direct measurement of fish size is useful in fish farming, fisheries and marine research, and we have tested how broadband echosounders can be used for this purpose.
21.12.2022

The 23rd edition of the Geilo Winter School

The Geilo Winter School is an annual event that provides researchers with a unique opportunity to learn from lectures, collaborate and exchange ideas and experiences. This year, the 23rd edition of the Geilo Winter School was held from January 22 - January...
08.02.2023

New paper: Training algorithms for acoustic target classification that do not require large amounts of training data

Here we further develop our model of semisuperserved learning to work on pixel-based segmentation. This work is done in collaboration with the Visual Intelligence SFI. You can read more about it here
08.02.2023

CRIMAC contributions to the 46th Scandinavian Symposium on Physical Acoustics

CRIMAC had four contributions for the 45th Scandinavian Symposium on Physical Acoustics. 
08.02.2023

CRIMAC cruise report: Development of acoustic and optic methods for underwater target classification

The cruise report from the joint survey for CRIMAC and LoVe observatory on "G.O. Sars" November 2022 is now published.
14.03.2023

New essay in Journal of Technology: Marchine learning + marine science

This essay outlines how we use machine learning in marine science in Norway. CRIMAC is collaborating with Visual Intelligence SFI where the Norwegian Computing centre and the University of Tromsø are partners on using machine learning on the vast amounts...
05.10.2021

New paper: The effect of shear-viscosity on resonance and target strength of mesopelagic

The target strength is required to estimate the abundance of mesopelagic fish. In this paper flesh shear viscosity is estimated, which is a key parameter for target strength, from in-situ broadband backscattering measurement.
29.09.2021

New paper: How to train acoustic target classification algorithms with less training data

Deep neural networks require a substantial amount of data for training. We have developed a new method for training deep networks for acoustic target classification with only 10 % of the training data compared to traditional methods. The work is a collaboration...
01.09.2021

Read our essay on science and industry collaboration in Journal of Technology

Norway has a long-standing collaboration between science, technology and fishing industry within “smart fisheries”. CRIMAC builds on this collaboration. Click to read our contribution in this special issue of Journal of Technology.
01.07.2021

Kongsberg's Full Picture Magazine: Digital future for ocean research

Norways Institute of Marine Research to use robot platforms and enhanced digital infrastructure to harvest data from the seas.
01.05.2021

IMR: Centre for research-based innovation launched with major herring survey

The CRIMAC centre wants the echo sounder itself to be able to distinguish between herring, mackerel, shrimps and gas emissions. Now scientists have completed their first expedition to learn the “dialect” of herring.
03.12.2020

Kongsberg's Full Picture Magazine: Tuning in to the sounds of the sea

Kongsberg is strengthening its long-standing relationship with Norway’s Institute of Marine Research by becoming a major partner in the new CRIMAC centre – bringing industry and science together to improve the monitoring of marine ecosystems and develop...
01.12.2020