The RMT is angry that the ferry company has offered only a 0.5% rise when other public sector workers received 3%.
Green MSP John Finnie has called on transport secretary Michael Matheson to launch a review into replacement plans for the fleet.
Ferguson Marine went bust in August last year and was then taken over by the Scottish Government.
Major road closed as ferry sailings cancelled and electricity firms on standby.
Winds of up to 60mph have affected the safe delivery of CalMac services from Brodick to Adrossan.