The procurement of two ferries from Ferguson Marine was “a catastrophic failure”, a Scottish Parliament committee has said.
The yard was due to deliver two ferries to be used on the west coast by 2018 at a cost of £97m.
MSPs were told last year by then-finance secretary Derek Mackay that “mismanagement” by the Port Glasgow shipyard led to delays and overspends.
The vessels are expected to be delivered by 2022 and 2023 at almost double the original cost.
An extensive inquiry by the Rural Economy and Connectivity Committee at Holyrood said the procurement process was “not fit for purpose” and called for an “independent external review” to take place.
Throughout the inquiry, witnesses spoke of a project fraught with problems, including a breakdown in the relationship between Ferguson and Caledonian Maritime Assets Limited (CMAL), the Scottish Government-backed procurement body.
In a 129-page report released on Wednesday, the committee