http://shet.news/vipov Copied! ALL crew members onboard a seismic survey vessel currently docked at Lerwick harbour which is linked to the recent cases of Covid-19 in Shetland are quarantining, according to the vesselâs owner. A spokesperson for PGS, which owns the Ramform Vanguard, said crew members are not allowed to disembark the ship. 10 of 14Adverts It comes after three positive coronavirus tests came through the local laboratory since the weekend, and were added to the local tally. NHS Shetland declined to comment further on the small cluster of cases but confirmed that they were all inter-linked and originated from outside the isles.