Pretty rare to cancel a crossing.
But Tas observations tell the story.
Still no storm warning just a gale warning.
Turns out to have been a Covid issue. A contractor tested positive and 10 crew are close contacts and are in quarantine in Devonport:
www.abc.net.au/news/2021-09-25/spirit-of-tasmania-sailings-cancelled-after-covid-scare/100491130