The HDMS AGPA is in Shipspotting (http://www.shipspotting.com/gallery/search.php?search_title=HDMS%20Agpa%20Y387). According to a comment in Shipspotting (http://www.shipspotting.com/gallery/photo.php?lid=2343520) the AGPA was supposedly renamed JUVEL II, also in Shipspotting (IMO 8739619). In fact, it was the AGDLEK (Y386) which was renamed as such. The JUVEL II was also modified but not drastically as AGPA.

She was formerly the Danish naval vessel HDMS Agpa (Y387), and has clearly undergone some re-building work. The Norwegian Register confirms ex Peder Most, Agpa

The IMO gives the name PEDER MOST built in 1974 which is described as a fishing support vessel. While that description seems to fit the ship pictured, I was not able to find other information about it.

IMO 8229767

That is the right SAGA (AIS reports often have strange ship type descriptions - on at least one site this one is "inspection vessel")
31m, c/s LEIU, MMSI 257997500
But still not found her previous identity

Owner or manager Norse Marin A/S, Tromsø has been in dispute with Norwegian authorities for 2 or 3 years over their refusal to grant a licence for sealing. I cannot really understand the issue, but for Norwegian readers, see
https://fiskeribladet.no/nyheter/?artikkel=52128

There are several pictures of this ship in Shipspotting as SAGA but not so much information to confirm this. There is a MMSI number (257997500) which describe a "tug" which seems doubtful.