The shipyard building two new ferries for CalMac has told MSPs the cost of completing one of the vessels has risen by £20m.
David Tydeman, chief executive of Ferguson Marine, said the cost of completing the Glen Sannox was now estimated to be £114m, plus a £4m contingency.
That is up from the previous forecast of a £94.8m final bill, with an additional £2.7m contingency.
