Wilson alludes to maintenance issues, as being a primary reason. My gut tells me it is far more of a crew issue, with a large experience gap now rearing its head. The days of the pioneering Captains is long gone. 10kts, of wind, the ferries stay in the harbour, 1 meter swell, ditto. The aeroplanes are now doing the same.
Couple the ferries, and the planes acting up, then a real problem looms. Can you imagine all of those Hampstead reared islanders, stuck in their crofts