The charity announced in March it was withdrawing its resources from the Western Isles.
NHS Western Isles says it is reviewing the incident and has urged other patients to be vigilant.
Police say 56-year-old Roland Crichton was from Mull in Argyll.
The 56-year-old man died in the accident on the A857 Ness to Stornoway road on Saturday afternoon.
Cameron Ross was jailed for 10 years after being found guilty of raping two women and abusing a third.
The vessel will provide an additional 10,000 passenger spaces for the festival later this month.
Cameron Ross was able to continue working as a police officer for six years after he was cleared of an earlier rape allegation.
Cameron Ross carried out attacks in Stornoway in 2012 and 2014, before abusing another woman in Inverness between 2019 and 2022.
The Gael Force-owned facility has made the fishing gear for more than 40 years.
