The bottom of the sea is the Danish Defence’s blind spot: 4 possible surveillance technologies

Denmark has not had submarines since 2004, but they may come back in the future, says Henning Heiselberg, head of Center for Security DTU. Illustration: Nanna Skytte.

Johannes Kidmose does not consider it improbable that an enemy vessel would be able to sabotage a submarine cable, internet cable, or gas pipeline on the bottom of the sea in Danish waters without anyone discovering it before the damage has been done. Sonobuoys for environmental monitoring. Sonobuoys can also be used to search for submarines. Illustration: tempestz / Bigstock.

Fibre-optic cables are mostly used for internet cables but can also function as a sensitive sensor. Illustration: Lasse Gorm Jensen.The Danish seabed is not just home to gas pipelines but also to thousands of kilometres of fibre-optic cables used for data transmission. The cables consist of optical fibres which, in addition to sending data at the speed of light, can also function as a sensitive and accurate sensor covering its surroundings.

“You can place a fibre-optic cable on top of a gas pipeline or cast it into the concrete casing that encloses a gas pipeline,” Lars Dittmann says.Platform Engineer med fokus på Developer ExperienceVi søger en certificeret statiker til RoskildeHowever, submarine fibre-optic cables are rarely laid together with gas pipelines or power cables to avoid faults on one type of cable affecting the other cables.

However, there is one problem with the magnetometer technology that we have to be aware of, Henning Heiselberg says.The underwater drone SAAB Double Eagle, which belongs to the Royal Danish Navy and is currently near Bornholm investigating the Nord Stream crime scene. Illustration: SAAB.The first three technologies are useful for finding out if there may be a submarine or underwater drone present in Danish waters.

“Seen in the light of recent observations of flying drones at the Danish and Norwegian platforms in the North Sea, that system is very relevant for underwater monitoring.”On the other hand, Denmark does not have a single manned submarine. The last Danish submarines were retired in 2004, and one is currently on display at Holmen in Copenhagen.

Danmark Seneste Nyt, Danmark Overskrifter

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