The data for this ex-Swedish navy ship that you supplied 'gpd' is very interesting,she sure looks sturdy an I assume very versatile in her new commercial role.

Ex HswMS Arkösund sold off in 2009 to private owners.

Built 1953 at Stockholm Naval Yard rebuilt 1990-91 at Oskarshamn.
Used as an inshore minelayer by the Coastal Artillery to lay and maintain controllable and non-controllable minefield. Arfter modernization mostly used as a command and control vessel.
31 x 7,5 x 3 meters 245 tons
2 x Scania DS11, two shafts 10-11 knots.

These were sturdy ships and popular on the civilian market as dive and work ships.