CMAL suggested operators were mainly responsible for vessel specificationiiNet Zero, Energy and Transport Committee, Official Report, 28 February 2023, Col 22, but also suggested it laid out pre-determined criteria (for example the length of a ship).iiNet Zero, Energy and Transport Committee, Official Report, 28 February 2023, Col 22 CalMac said it was "agnostic on vessel design".iiNet Zero, Energy and Transport Committee, Official Report, 21 February 2023, Col 38 Stuart Garrett said it was the role of the operator to design ferriesiiNet Zero, Energy and Transport Committee, Official Report, 21 February 2023, Col 30 while Robbie Drummond said "..we have to used whatever is provided to us and we will do that to the absolute best...