HDMS Sehested (P 547) is a Willemoes-class fast attack craft of the Royal Danish Navy which was in commission from 1978 until 2000. It is now docked at Holmen in Copenhagen where it serves as a museum ship, part of the Royal Danish Naval Museum. The ship is named after Christen Thomesen Sehested, a Danish vice-admiral during the Great Northern War (1709-1721).

https://en.wikipedia.org/wiki/HDMS_Sehested

P547 Sehested

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HDMS Sælen (S323) (or KDM Sælen ) is one of the three Tumleren-class small coastal submarines of the Royal Danish Navy.

https://en.wikipedia.org/wiki/HDMS_S%C3%A6len

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