A544 Alholm is a Danish naval ship of the Holm-class. Here from Lillebælt near Bøjden, Denmark. The photo was taken from the Danish naval ship Havfruen. The boat is used for training cadets. The geolocation is only approximate.
<a href="//commons.wikimedia.org/wiki/User:Slaunger" title="User:Slaunger">Kim Hansen</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>