Monday, December 28, 2015

Two Indigenous North American Boats in Maine Museums

A couple of trips to small museums in Maine yielded two nice boats: a bark canoe and a skin-of-frame kayak. It's almost like a snapshot from Adney and Chapelle's The Bark Canoes and Skin Boats of North America

The canoe, at the Abbe Museum in Bar Harbor, is a fine reproduction. (We've written before about the Abbe Museum.) The kayak, at the Peary-MacMillan Arctic Museum at Bowdoin College, in Brunswick, is an authentic artifact.

Birchbark canoe of the Penobscot style at the Abbe Museum, built by Steve Cayard and David Moses Bridges. It's 14 feet long, weighs 50 lb., and according to the exhibit card, it required 500 hours to build, plus 200 hours to gather materials. We've written previously about Steve Cayard's bark canoes, and not coincidentally, the canoe construction of his that we documented was assisted by David Moses Bridges. (Click any image to enlarge.)
The bark along the sides of the canoe is etched in traditional patterns. Bark is harvested in winter to obtain the brown color that can be scraped away to reveal the lighter color underneath. Seams between sections of bark are sewn with spruce root and sealed with pine resin.
Inner and outer gunwales are lashed together with split spruce roots and pegged. A gunwale cap is also pegged in place. The thwart is mortised into the inner gunwale (i.e., inwale) and lashed.  
The bow has an etched flap of bark held against the hull by the outer gunwale. It's known by the Passamaquoddy term for "diaper" and it is purely decorative.
At the Peary-MacMillan Museum: a kayak of Labrador Inuit design, built between 1860 and 1890.  
The very flat deck rises just a bit in front of the cockpit rim to make it easier to enter the kayak. Built to fit its paddler specifically, the kayak would still have been a tight fit. 
One can see the chine timber and one intermediate longitudinal member between it and the sheer timber (which is not visible). The kayak has minimal deck rigging. The paddle just above the kayak is extremely long, and the blades are especially narrow.
A model kayak just below the real one, built around 1914 by an Inuit for the MacMillan expedition's collection. 
The model has more elaborate deck rigging than the real kayak and a different shape cockpit rim. On the after deck is a harpoon line and drag. 
An Inuit child using an empty packing crate ("Spratt's dog biscuits") as a toy kayak, 1913.


Monday, December 21, 2015

An Ancient Scottish Logboat

This logboat was discovered in 1960 near the shore of Loch Glashan in Argyll, Scotland, and the boat led to the discovery in the lake of a nearby crannog -- an artificial island settlement. (This one was from the 6-8th centuries.) The boat is on display at the Kelvingrove Art Gallery and Museum in Glasgow.

The boat hasn't been well dated, and it's thought to date from the 1st through 10th centuries. A paddle found nearby -- which might or might not have been associated with the boat, has been dated to the 6th to 9th century.

The boat measures about 3.15 meters long and a bit under 0.8 meters in breadth. It possesses some interesting features for such a basic vessel.
Loch Glashan logboat
Even considering that the sides have sagged downward, the bow is still very high relative to the height of the gunwales. (There is no evidence for the use of of additional planks that would have raised the sides.) If its height was intended to keep water out of the boat in a heavy chop, it would have been necessary to keep the boat head-on to the waves at all times.
Just barely visible is a false stem, which extends beneath the hull to form a false keel. For such a short boat, this probably was a considerable aid to directional stability. (Click any image to enlarge.)
Loch Glashan logboat
A sitting thwart is supported on cleats left standing proud when the hull was hollowed out. It's quite low to keep the center of balance low. 
Loch Glashan logboat transom slot
The stern was enclosed with a plank transom that fit into a slot that's let into the hull a couple inches forward of the extreme aft end. The transom plank (or planks) was considerably thinner than the hull. Some kind of caulking was probably used, possibly moss or some natural fiber.
Loch Glashan logboat

Loch Glashan logboat plans
The thwart-support cleats and false stem and keel can be seen in the section view. The upward bend of the bottom in the middle (in section view) is almost certainly due to deformation while the boat sat on its false keel, not the original shape. The sitting thwart is rather far forward for a solo paddler.
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Photos by the blogger, except the final one, which is sourced with a link. The illustration is from the Kelvingrove Museum.

Monday, November 23, 2015

Diversity of British Isles Coracles:

It's often said that the great diversity of small craft is a result of the extremely various uses required of boats and the extremely various environments in which they are used (along with differences in access to raw materials). I think this misses one important factor: the individuality of humanity.

In Coracles of the World, Peter Badges describes how each of the numerous types of coracle in the British Isles are native to an individual river, or even a stretch on a river, with a different type sometimes being used upstream or downstream. But surely, some of these stretches of river have very nearly the same conditions, be they in Scotland, England, Wales or Ireland, and many locales have access to the same or similar materials.

The uses to which coracles were traditionally put were also pretty consistent and of limited diversity: viz, mainly fishing with nets; angling; and the transportation of humans and cargo. This isn't to imply that angling and net-handling impose the same design requirements. But boats that are used in similar ways on similar rivers would function equally well if they were of similar designs.

I think it probable that much of the diversity in boat design is due to the impulse of individualism in so many craftsman. This impulse is often a creative or innovative one -- a desire to attempt some improvement in functionality, appearance, or ease of construction. Sometimes, though, it is probably due to a simple desire to do things differently from one's parent, employer, or neighbor; to be able to say "This is my idea/my design."

Even if the attempt at a functional improvement does not actually produce one -- even if the change just to be different makes the boat more difficult to construct or use -- the builder might continue building his boats in that manner, simply because it is his own way. And if he has a son or an apprentice or half-a-dozen customers who get accustomed to his boats, the new style might become entrenched in a small, parochial geographic zone, which the British Isles have in such abundance.

Before the days of radio and television, there were those who claimed to be able to identify the home of any Britisher to within 40 miles or so based strictly upon his speech. (I think Henry Higgins claimed as much.) No one would argue that a Cornwall dialect is objectively superior to a Fife one. (Okay, they probably do. But the argument won't hold up in court.) Coracles I think, are like that: some of the differences are simply differences, not advantages.

So let's look at some photos. The intent isn't to identify each coracle type with a specific locale: that is the point of much of Badge's book. Our objective is only to illustrate the diversity, perhaps as evidence of how the creative impulse -- along with practical issues such as river configuration, available materials, and the requirements of different uses -- produced it within the seemingly simple concept of the coracle (surely among the simplest boat types in existence) in such a limited geographic range. I've left Badge's original captions in place in the images themselves; my comments appear below them. 
coracle
The coracle of popular conception: perfectly round. (Click any image to enlarge.)

coracle
A very pleasing oval in plan view.
coracle
Sides roughly straight and parallel, one end rounded, the other mostly rounded with a slight point to it.
coracle
Pear-shaped. It starts out egg-shaped, then it's drawn in at the waist to attach the thwart.
coracle
One end dead flat; the other rounded; sides straight and parallel. This and the previous image illustrate an odd, but fairly common, characteristic of coracles: when one end is blunter than the other, it's usually the bow.
coracle
Looking now at sectional shape: some coracles have substantial tumblehome -- i.e., the bilges bulge out, and the craft narrows as it rises to the gunwales. The botttom is flat.
coracle
Another flat-bottomed coracle, but this one has no tumblehome. Its straight sides flare out.
coracle
Looking now at construction methods: this coracle has a gunwale composed of woven withies and "frames" of slender branches, doubled across the bottom.
coracle
The gunwale of this coracle is sawn lumber. The frames are nicely machined splints, fastened at every intersection with screws. The transverse and diagonal frames overlay the longitudinal ones.
coracle
The frames are narrow, riven splints. The transverse and longitudinal frames are woven over/under/over one another. Although woven-splint construction is common, this one happens to be a particularly complex example.
coracle
A very different construction method: the entire boat is woven like a basket.
coracle
A most unusual example of splint construction. The normal right-angled orientation of splints is discarded in favor of changing angles and complex curves. Note how a splint runs just below the gunwale around most of the boat, then curves down sharply to support the thwart.
coracle
The standard method of portaging a coracle: the user places a strap that passes through holes in the thwart around the shoulders. A less common method is to carry to boat inverted over one's head, with the thwart resting on one shoulder. 
coracle
Paddling differences: Two handed. Note also the bowl-shaped sections and the lattice-like structure supporting the thwart. The support structure also kept a sein net confined in the stern and prevented it from sneaking into the bow portion and interfering with the boater's feet.  
coracle
Another two-handed paddler. Compare the rough, irregular appearance of this coracle with the geometric purity of the previous one.
coracle
One-handed paddling was apparently more common historically. The man at right rests the upper part of the paddle's shaft in the crook of his elbow. The woman appears to be sculling with the paddle grasped well below the end grip, with the loom levering against the gunwale.
coracle
A large, two-person coracle for angling. (Note the "guide's" one-handed paddle grip. Most coracle angling was done in one-man boats, where a one-handed grip on the paddle allowed the rod to be managed with the other. But the one-handed method took hold as the norm in some coracle types, and was used even when two hands were available.) Net fishing was also done in both one- and two-man coracles. 

All images are from Coracles of the World by Peter Badges.