EARLY APRIL AND A COLD WIND was cutting up from the south-west. Freyja was anchored in the little rocky inlet at the head of Flodabay on the east coast of Harris. A seal watched from the dark water. Acid streams were draining off the moorland into the sea. The boat swung a little and the reflected sun glinted up at the strakes of her bilges. I was shivering, not because of the cold, but because I was frightened at the idea of sailing out alone in this small boat to the Shiants. The halyard was slapping against the mast and the tiny waves clucked as they were caught against the underside of the hull. The shores of Flodabay were sallow and tussocky with the dead winter grasses and the boat was washed in late-winter sun. Freyja is sixteen feet from stem to stern and looks from the shore as slight as a balsawood toy. She and the Minch are not to the same scale.

      It was the first time I was going to sail to the Shiants on my own. Always before, I had allowed myself to be carried out by fishermen from Scalpay or boatmen from Lewis, travelling as I now see it like a man in a sedan chair, gracefully picked up, carefully taken over and gently set down. That could never be enough. That was not being engaged with the place. An island can only be known and understood if the sea around it is known and understood.

      Six months previously, I had read a history of the birlinn, the sailing galley descended from Viking boats that was used in these waters by the highland chiefs, at least until the seventeenth century. They raided and traded with them. Their lives were as much bound up with them as with any land-based habitation. The book described the carving of a birlinn surviving on the tomb of Alasdair Crotach, Hunchback Alasdair, the Macleod chieftain in Harris in the mid-sixteenth century. He was a violent man, the mass murderer of a cave-full of Macdonalds on Eigg, men, women and children, three hundred and ninety-five of whom he suffocated with the smoke of a fire lit at its narrow mouth.

      This killer’s birlinn is an image of extraordinary beauty.

      The form and curve of each strake, the fixings of the rudder, even the lay of the rope in the rigging: everything is carved with exactness, clarity and what can only be called love. Around it are the relative crudities of angels, apostles and biblical stories. Their forms never escaped the stone but the carved ship shows the panels of cloth in the bellied-out sail. It even shows the way a sail can be creased against a forestay that is faintly visible through it. Above all, though, it lovingly described the form of the hull, the depth of its keel and the fullness of the bilges. All of this was carved in millimetre detail, testament of something that mattered. The birlinn was shown at full stretch and fully rigged, but out of the water, so that the swept beauty of the hull could be seen. Only a shipwright or a sailor could have carved such a thing: it is the mental, not the actual image of a ship at sea, a depiction of what you can imagine of a boat at its most perfect moment, made by a man who knew it. The author of the birlinn history had set a Gaelic proverb at the head of his central chapter:

      ‘S beag ‘tha fios aig fear a bhaile,Cia’mar ‘tha fear na mara beò.

      The landlubber [literally the man of the village] has no idea

      How the sailor [the man of the sea] exists.

      That was the gap I wanted to cross; to acquire the habits of mind which the carver of the birlinn had so easily conveyed. I rang the author, John MacAulay. He lived in Flodabay in South Harris. Did he know of anyone who might be able to build me a boat that would take on something of that Norse tradition? That I could sail single-handed? Which would be safe and strong enough to survive in the Minch, even on a bad day, and which might be hauled up a beach, at least with the help of a winch?

      ‘Ah yes,’ John said, a light, slight voice. Definite, polite, courteous, withdrawn, sharp, sprung.

      ‘In Harris, would that be?’ I asked him.

      ‘Yes, I think it would.’

      Wonderful news. And who was the shipwright?

      ‘Well, I think you are speaking to him now.’

      John MacAulay was not only a historian of the Viking inheritance, but a boat builder of thirty-five years’ experience. He had made and repaired fishing boats in the Shetland island of Unst, and at Oban and Kyle. He had been a fisherman and was an experienced yacht sailor. He was one of the leading experts on both the history of the sea kayak and the traditional working boats of the Hebrides. He was an elder of his church in Leverburgh and author of a book on the church at Rodel in which the birlinn carving was to be found. For two months or so John and I corresponded by letter and occasionally by phone. I said I thought I could do what I needed to do with a twelve-foot boat. He said it would have to be at least sixteen foot. ‘I’m not sending you out there in something twelve foot long.’ I wanted something ‘double-ended’, coming to a point at bow and stern. John said, ‘That would be a waste of wood. You’ll want a transom on it.’ A sixteen-footer with a transom – the stern cut off square – was the equivalent of a twenty-footer that came to a point at the stern. Timber in the treeless Hebrides was always at a premium. ‘It would be a waste of wood. And time. And money,’ he said.

      He posted me drawings of the boat he proposed. Unpractised at reading such things, and unable to guess performance or quality from buttock lines or the sheer of the gunwale, I took him at his word. I had yet to meet him but even at a distance he exuded an authority and conviction which it was not easy to deny. I would turn repeatedly to a passage in his book about the birlinn:

      A close relationship, like a spiritual bonding, develops between the shipwright and the finished vessel, which continues throughout its entire material life. It has been known for certain boatbuilders to refuse to build for a particular client, if they did not feel an affinity towards one another. A reputable shipwright might not want to see some work of devotion fall into the wrong hands, and would rather find some obscure reason for refusing