The A559 Sleipner was build in 1986 as torpedo transport, but with the decommisioning of the last torpedo carrying ships in 2000 (The Willemoes class) it has taken on a new role as a multi-purpose transport. It replaced the wooden A558 Sleipner.
Along with the Faxe class tankers it provided the range and endurance the MTBs and FACs lacked.
The precursor to the A559, the A558.
Build in 1943 for the Kriegsmarine. It was in Copenhagen when Germany surrendered in 1945 where it was taken over by the RDN. Sold in 1986 for 240,000kr (App. $35,000)
It was a poor sea boat and rarely ventured further than Skagen.
If I can find any info on how it looked and what it was called in German service, I'll post a drawing of that as well.