Tim Severin’s Voyage

In 1976–77 the explorer and writer Tim Severin built a leather-hulled curragh to early-medieval Irish specifications and sailed it from Co. Kerry across the North Atlantic — by way of the Hebrides, Faroes, Iceland, and the waters off Greenland — to landfall in Newfoundland, demonstrating that such a crossing was physically possible. The voyage is genuine and valuable experimental archaeology: it established the feasibility of a hide-boat passage by the northern route and showed that several Navigatio marvels correspond to real North Atlantic phenomena. It did not, and could not, establish that any sixth-century monk actually made such a crossing, and Severin himself was careful to insist on the difference.

Tradition: Pan-Orthodox (pre-Schism; Celtic)

The Boat: Reconstructing the Curragh

The premise of Severin’s project was that the Navigatio Sancti Brendani Abbatis describes, in passing, a boat that could in principle be rebuilt and tested. The text has the monks construct a vessel of a wooden frame covered with ox-hides tanned in oak bark, dressed with fat, with spare hides and supplies of fat carried for repairs (O’Meara, Voyage, c. 4). Severin took this not as a logbook entry but as a technical hint worth following experimentally, and he set out to build a craft to the specifications implied by the Navigatio together with the surviving practice of Irish curragh-building, researching traditional materials and methods for authenticity rather than improvising a modern approximation (Severin, The Brendan Voyage, 1978).

The result, named Brendan, was a boat of about thirty-six feet built around a frame of ash and oak lashed together with leather thongs — a flexible, jointless skeleton of the kind that lets a hide boat work and give in a seaway rather than fight it. Over this frame Severin stretched a skin of ox-hides tanned with oak bark in the old vegetable manner, the hides cut and sewn together with flax thread along overlapping seams, the whole then dressed and waterproofed with wool grease — the natural lanolin and tallow that the Navigatio’s “fat” most plausibly denotes. The choices were deliberately archaeological. Oak-bark tanning, leather lashings, hand-sewn seams, and a lanolin dressing were selected because they reflected what a sixth- to ninth-century Irish workshop could actually have done, and the build deliberately tested whether period materials, and not merely the general idea of a hide boat, would hold up at sea. The reconstruction is thus the heart of the experiment: everything the voyage went on to show about feasibility depends on the boat having been built, so far as research allowed, the way an early Irish curragh would have been built (Severin, The Brendan Voyage, 1978; on curragh construction generally, Hornell, British Coracles and Irish Curraghs, 1938).

The Voyage: The Northern Route Actually Sailed

The voyage was made in two stages across two seasons. Brendan set out in May 1976 from Brandon Creek on the Dingle Peninsula in Co. Kerry — a starting point chosen for more than convenience, since the creek lies beneath Mount Brandon and carries the saint’s own name, one of the dense cluster of Brendan place-names that mark this stretch of the Kerry coast (see Clonfert and the Cult). From Kerry the boat worked north up the Atlantic seaboard to the Hebrides, and from the Hebrides on to the Faroe Islands. There the first season ended; the boat was laid up for the winter, and the crew resumed in 1977.

The second stage carried Brendan from the Faroes to Iceland, and then by the hardest legs of all out into the waters between Iceland and Greenland — across the Denmark Strait and through the sub-Arctic seas off the Greenland coast, where the boat met pack-ice — before turning toward the North American shore. Landfall came at Peckford Island, off the Newfoundland coast, in June 1977 (Severin, The Brendan Voyage, 1978). The route sailed was precisely the “stepping-stone” itinerary that serious advocates of the America claim had argued was the only realistic way a curragh could have crossed: Ireland to the Hebrides to the Faroes to Iceland to the Greenland waters and so to Newfoundland, each leg short enough to lie within the reach of a small hide boat and the whole hugging the higher latitudes where land or the prospect of land is never far (see The Pre-Columbian Claim). What had been a line drawn hopefully on a map was now a track actually sailed in a leather boat, and this is the voyage’s first and most concrete result: the northern route is navigable by a craft of the type described.

What the Voyage Illuminated in the Text

Beyond the bare fact of completion, the voyage’s most striking literary payoff lay in the experiences the crew met along the way, several of which read uncannily against episodes of the Navigatio. These correspondences are worth presenting at their strongest, for they are the reason the voyage so captured the imagination — and they must then be weighed with care.

Whales came close to the boat in the northern waters, surfacing beside a small craft riding low to the sea, in a way that made vivid the Navigatio‘s Jasconius — the great fish on whose back the monks land and unknowingly keep Easter (O’Meara, Voyage, c. 10–11). The vast seabird colonies of the northern islands, among the densest on earth, gave a tangible sense of the Paradise of Birds, the wooded island thronged with birds (O’Meara, c. 11). The Faroes, true to the meaning of their name, Føroyar, “sheep islands,” showed the feral flocks that match the Navigatio‘s Island of Sheep with its huge unshepherded herds (O’Meara, c. 9). Most arresting of all, off Greenland the crew met icebergs — towering, translucent, exactly the sort of thing a sixth-century Irishman lacking any word for such a structure might have rendered as the crystal pillar in the sea (O’Meara, c. 22) — and the pack-ice that has been proposed for the Navigatio‘s “coagulated” or sluggish sea (O’Meara, c. 21).

The single most dramatic moment fused experiment and text. The leather hull was holed by ice in the Greenland waters, and the crew, working from inside the boat, patched the punctured hide and kept Brendan afloat — a real-time demonstration that the very technology the Navigatio describes, including its provision of spare hides and grease for repair (O’Meara, c. 4), could absorb the kind of damage those seas inflict. The experiential correspondences are genuinely arresting, and any honest account concedes their cumulative force: they show that the text’s marvels are consistent with the realities of North Atlantic seafaring, that a curragh-voyager on this route would in fact meet whales, bird-cities, sheep-islands, and ice. What they establish is consistency, not derivation — a point to which the following sections return with equal force.

What the Voyage Establishes

Stated precisely, Severin’s voyage establishes three things, and it is worth holding them apart from one another. First, a curragh of early-medieval type is seaworthy enough to cross the North Atlantic by the northern, stepping-stone route: the passage from Kerry to Newfoundland was actually completed in such a boat, so the crossing belongs to the category of the physically possible rather than the merely imagined (Severin, The Brendan Voyage, 1978). Second, the specific leather-wood-grease technology works under real conditions, including the punishing condition of ice — the oak-bark-tanned ox-hide skin, the lashed frame, and the lanolin dressing survived the open ocean, and the hull resisted, or was repairable after, an ice strike at sea. This is a real archaeological finding about the capabilities of a material culture, independent of any question about Brendan. Third, a number of the Navigatio’s marvels correspond to genuine North Atlantic phenomena that a curragh-voyager on this route would actually encounter — whales, seabird colonies, sheep-islands, icebergs, pack-ice — so that the text reads plausibly against the experience of the sea it appears to describe.

The shape of the result is therefore double and definite: the crossing was feasible, and the Navigatio is consistent with real northern seafaring. Both halves are solid contributions. The first converts the America discussion from a question of physical impossibility — could a hide boat survive such a passage at all? — into a question of historical fact, which is a real clarification. The second shows that the text’s wonders are not free-floating fantasy disconnected from any sea, but are at least the kind of things the North Atlantic actually offers. These are precisely the contributions experimental archaeology is fitted to make, and Severin made them well.

What the Voyage Does Not Establish

With equal force, three things the voyage does not establish must be stated, because the popular reception of The Brendan Voyage has persistently blurred them. First, the voyage does not establish that Brendan, or any sixth-century Irish monk, actually made such a crossing. Demonstrating that a thing can be done is silent on whether it was done; the deed remains wholly unproven by the experiment, which proves only the possibility (Severin, The Brendan Voyage, 1978). Second, the voyage does not establish that the Navigatio records a real voyage rather than a literary and liturgical allegory. The text is a composition of the late eighth to tenth century, ordered by the calendar of the Church and belonging to the Irish immram tradition; its episodes are shared genre motifs that recur in voyage-tales no one reads as American crossings, and a marvel that happens to fit an iceberg is not thereby a record of an iceberg (see The Navigatio Sancti Brendani and Reading the Navigatio). Severin’s encounters show that the text is compatible with the North Atlantic; they cannot show that it was generated by a real passage through it, for the same marvels could be — and in cognate immrama demonstrably were — composed without any such voyage.

Third, and decisively, feasibility-in-the-1970s is not proof of a sixth-century achievement. Severin sailed with modern charts, navigational instruments, radio, the possibility of rescue, weather knowledge, and — the quiet but crucial advantage — the certain foreknowledge that land lay to the west and roughly where to find it. A sixth-century monk had none of these. To know that a continent is there and to steer for it with twentieth-century aids is a different undertaking from launching westward into an ocean believed by many to be endless, and the success of the former does not transfer to the latter. The voyage answers “could the boat survive the sea?” with a confident yes; it does not, and cannot, answer “did anyone do this, and with no map and no certainty of land?” Severin himself was scrupulous on exactly this point, careful to claim that he had shown such a voyage possible, not that he had shown it happened — a discipline his more enthusiastic readers have often failed to keep (Severin, The Brendan Voyage, 1978; cf. the framing in Wooding, ed., The Otherworld Voyage, 2000).

[Disputed: whether the demonstrated feasibility of a curragh crossing bears on the historicity of the Navigatio‘s voyage — Those who press the connection (popular readers of The Brendan Voyage, and sympathetic advocates in the line of Geoffrey Ashe, Land to the West, 1962) hold that proving the crossing possible, and matching its phenomena to the text, makes a real underlying voyage substantially more credible. Critics, and the scholarly consensus represented in Jonathan Wooding’s The Otherworld Voyage in Early Irish Literature (2000), hold that feasibility is logically independent of actuality: that “could be done” never entails “was done,” that the episode-correspondences are non-probative because shared with other immrama and read into the text by interpreters who already know the North Atlantic, and that the Navigatio’s genre and liturgical structure place it as allegory rather than itinerary. Severin himself sided with the cautious reading, claiming feasibility and not historical fact. The dominant view is that the voyage strengthens the feasibility question and leaves the historicity question untouched.]

The Proper Place of the Voyage

The disciplined verdict gives Severin’s voyage its real and considerable due without letting it carry a weight it was never meant to bear. As experimental archaeology it is admirable: a careful reconstruction of an early Irish curragh, built so far as research allowed from authentic materials by authentic methods, sailed over the very route in question and brought through to a North American landfall, with the bonus of a vivid field-test of the Navigatio’s marvels against the living sea. It deepens our appreciation of the realism of the curragh, the practicality of the northern stepping-stone route, and the seafaring texture of the text. These are genuine gains, and the voyage deserves the admiration it has received for them.

But its evidential force runs to one side of the America debate and not the other. The question of a sixth-century Irish discovery of North America divides cleanly into two: could such a crossing have been made, and was it in fact made and recorded in the Navigatio? Severin’s voyage bears entirely on the first and not at all on the second. It strengthens the feasibility half of the argument — decisively, by turning a possibility into a demonstrated fact — and it leaves the actuality half exactly where it stood, to be settled, if it ever can be, by the text’s genre and date and by the silence or speech of the archaeological ground (which, for a pre-Norse Irish presence in America, remains wholly silent; contrast the dug Norse attestation at L’Anse aux Meadows). The voyage is the America claim’s best friend and yet no evidence for its truth: it shows the crossing belongs to the realm of the possible, and stops precisely there. To honor it rightly is to keep “could” and “did” rigorously apart — to admire what Severin proved, and to decline to claim what he did not (see Legacy and Assessment).

References

Severin, Tim. The Brendan Voyage. London: Hutchinson, 1978. (The account of the 1976–77 experimental voyage; cited throughout for the experiment and its findings, and explicitly not as proof of the legend’s historicity — Severin claims demonstrated feasibility, not historical fact.)
Navigatio Sancti Brendani Abbatis. Trans. John J. O’Meara, The Voyage of Saint Brendan: Journey to the Promised Land. Dublin: Dolmen Press, 1976; repr. Gerrards Cross: Colin Smythe, 1991. (Cited by chapter; the text whose curragh and marvels Severin tested; O’Meara’s introduction treats the work as spiritual literature rather than itinerary.)
Wooding, Jonathan M., ed. The Otherworld Voyage in Early Irish Literature. Dublin: Four Courts Press, 2000. (Scholarly framing of the Navigatio as allegory and genre; the consensus that feasibility does not establish historicity.)
Hornell, James. British Coracles and Irish Curraghs. London: Society for Nautical Research, 1938. (On the construction and seafaring of the Irish skin boat, against which Severin’s reconstruction can be set.)