Kobbergrund is a

shoal In oceanography, geomorphology, and Earth science, geoscience, a shoal is a natural submerged ridge, bank (geography), bank, or bar that consists of, or is covered by, sand or other unconsolidated material, and rises from the bed of a body ...

in the

Kattegat The Kattegat (; ; ) is a sea area bounded by the peninsula of Jutland in the west, the Danish straits islands of Denmark and the Baltic Sea to the south and the Swedish provinces of Bohuslän, Västergötland, Halland and Scania in Swede ...

11 kilometers (7 miles) East South East of the Danish island of

Læsø Læsø ("Isle of Ægir, Hlér") is the largest island in the North Sea bay of Kattegat, and is located off the northeast coast of the Jutland Peninsula, the Denmark, Danish mainland. Læsø is also the name of the municipality (Danish language, D ...

, lying close to the main shipping lanes from the south.

Shipwrecks

It is the site of several shipwrecks, including the Russian ship ''Baron Stieglitz'' in 1840 and the earlier '' Printz Friderich'', a Danish ship-of-the-line in 1780. The wreck of the latter was newly discovered in 2018 by a team using modern survey equipment. The shoal was known in English as "Kobber Ground".

Survey

The survey of Danish coasts and waters begun in 1791, and restarted after a hiatus in 1827, saw the first general chart for the Kattegat published in 1844.
On 20 November 1853 the Danish government anchored a

lightvessel A lightvessel, or lightship, is a ship that acts as a lighthouse. It is used in waters that are too deep or otherwise unsuitable for lighthouse construction. Although some records exist of fire beacons being placed on ships in Roman times, the ...

on the Ground at . The vessel was

schooner A schooner ( ) is a type of sailing ship, sailing vessel defined by its Rig (sailing), rig: fore-and-aft rigged on all of two or more Mast (sailing), masts and, in the case of a two-masted schooner, the foremast generally being shorter than t ...

-rigged, painted with a white cross on each site, and carried three lights on her mast.

Lightships

The Danish government stationed lightships at Kobbergrund from 1853 to 1908."Positionerne for Danske Fyrskibe".
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References

Shoals of Europe Kattegat Sandbanks of the North Sea {{Marine-geo-stub