The annual cost of repairing CalMac 's fleet of ferries has tripled in 10 years - reaching more than £28million last year. In 2011, repair costs stood at £9.5million but rose to £28.6million in 2021 with total spending going beyond £200million since 2007.
The ferry network has been stretched as the aging fleet of vessels is withdrawn for repairs, with island communities warning MSPs last month that the service was in an "all-time critical situation". CalMac's oldest large ferry, MV Isle of Arran, is 39 years old.
More than a third of the fleet have exceeded their 30-year design life. The two new vessels being built at Ferguson Marine in Port Glasgow are several years late and more than double their original budget.
The figures were released by the Scottish Government through a Freedom of Information request made by the Scottish Tories.
Conservative MSP Graham Simpson said: "The age and decline of Scotland's ferry fleet is taking an ever heavier toll on island communities and the public purse. More than a third of CalMac's ships are working beyond their design life, and the operator's head engineer has admitted that breakdowns will become more frequent as time goes on. It is no wonder that the cost of repairs has soared.
"The SNP have utterly failed to deliver their promised ferry replacement programme, which has forced them to fork out a fortune of public money on ships which should rightly have been retired years ago."
He continued: "Meanwhile, two unfinished vessels in (the) nationalised Ferguson shipyard are several years late and still months away from completion, having racked up costs of more than £250million so far. The SNP is letting down Scottish taxpayers and abandoning island residents who rely on these lifeline routes. They must urgently deliver the new ferries we desperately need or the breakdowns and delays will only get worse."
A Transport Scotland spokesperson said: "The Scottish Government has invested around £2billion in our ferry services since 2007. It has also established a Resilience Fund to ensure future reliability and availability of vessels, which is over and above the annual expenditure for maintenance and repairs.
"The allocation for 2021-2022 is £4million for each of the lifeline fleets. Caledonian Maritime Assets Ltd (Cmal) are responsible for governance of this funding with CalMac Ferries Ltd leading on implementation. Since 2007, we have also increased frequency significantly on a number of services as well as bringing in new routes."
The spokesperson continued: "We have long acknowledged the need to address delays in ferry infrastructure, which is why we have committed to investing a further £580million in the Infrastructure Investment Plan. We have recently issued the contract to build two new ferries for the Islay routes and we look forward to the recently acquired MV Loch Frisa entering service.
"We continue to charge CalMac and Cmal with seeking potential second-hand tonnage to improve operational resilience on the Clyde and Hebrides ferry routes. The previous charters of MV Arrow are further evidence of this ongoing commitment to improve and support the existing fleet in this way."
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