Here is the Guard Supplier, owned b a Norwegian company Had never heard of, and festooned with a variety of equipment which probably has something to do with resupplying seismic vessels. It was built in 1999 and was previously the Pacific Supplier, to the UT 719 design. Although it appears to be intended to carry out the same task as the Bourbon Petrel it is difficult to see what these small cranes and the pipes discharging water over the side are for. Edit - Thanks to those who have been in touch to tell me that this vessel has been adapted to carry out fish farming activities. There are interesting photos on the owner's site.

Photo taken a couple of days ago by Kenny Polson in Lerwick and posted here on 21st January 2020.