Two new ferries are to be ordered to help relieve pressures on west coast services operated by CalMac.
Transport Scotland said £115m had been allocated to build both ships similar to ones currently under construction for the Islay service.
The plan is to deploy the ships on the Skye triangle route and award the contract by the end of the year.
One of two other ships already being built at Ferguson shipyard in Port Glasgow will now be deployed elsewhere.
Transport Minister Jenny Gilruth said the ship known as Hull 802, which was previously planned for the Skye triangle, could potentially be used on the Arran route in the summer season.