TALKS to resolve the dispute over Scotland's west coast ferry services have been branded "bitterly disappointing" by the union representing workers.

The RMT union has warned that further industrial action cannot be ruled out ahead of two days of "last-ditch" negotiations today and Thursday.

Union leaders said progress on the issues of jobs and working conditions had been slow in discussions held last week with the Scottish Government and CalMac.

Two-thirds of west coast ferry services were suspended in June as ferry staff sought reassurances over the future of the Clyde and Hebrides operations.

A further day of strike action planned for earlier this month was called off to allow for talks over a tendering process that could see routes change hands from publicly-owned CalMac to private firm Serco.

In a circular to CalMac members, RMT general secretary Mick Cash said: "It is fair to say that the talks so far have been difficult and we are concerned that the emphasis seems to be on what can't and won't be done rather that what can be done to solve this dispute, particularly from CalMac.

"This is bitterly disappointing as your union suspended the industrial action in good faith to allow these talks to take place.

"The RMT has made every effort to secure a series of very basic assurances over no compulsory redundancies, staffing levels, conditions of service and pensions, but to no avail.

"Unless there is more movement from the company in these talks, then further industrial action cannot be ruled out."

CalMac's contract to run the Clyde and Hebrides ferry services comes to an end next year and the Scottish Government has put the contract out to tender, in compliance with European Union (EU) law.

A Scottish Government spokesman said: "It is disappointing the RMT union feels the need to consider further strike action with two days of discussions still to take place."Ministers entered these talks in good faith and will continue with that constructive approach.

"The minister for transport will chair a fourth day of discussions with CalMac and the unions on Wednesday, with the aim of reaching a resolution that avoids further strike action on the Clyde and Hebrides ferry services that would impact the communities that they serve."