Litigation has now commenced in the US federal court in Louisiana on a suit filed by a deceased crewmember’s estate against the shipowner / employer alleging unseaworthiness and Jones Act negligence –

‘for failing to provide Decedent with a safe workplace, failing to implement policies and procedures intended to protect its vessel crew from COVID-19, failing to train its vessel crew members on the actions necessary to prevent contracting and spreading COVID-19 aboard its vessels and allowing a boat captain infected with COVID-19 to remain aboard the vessel.’

https://www.standard-club.com/risk-management/knowledge-centre/news-and-commentary/2020/05/news-vessel-policies-under-scrutiny-in-us-jones-act-litigation-for-crewmember-death-caused-by-covid-19.aspx