Wooden Boats, Held Together by Hand

Walk along the harbour at Whitby, Staithes or Filey on a cold morning and you will often hear the work before you see it: the soft tap-tap-tap of a caulking mallet, or the hiss of steam escaping a timber box. The North Yorkshire coast has never lost its wooden boats entirely, and it has never quite lost the people who know how to keep them afloat. Fishing cobles, pleasure yawls, rowing boats and the occasional restored trading vessel still pass through local sheds for repair, and the skills used on them are the same ones that built the Whitby colliers which carried eighteenth-century explorers across the Pacific.

What survives here is not a museum demonstration. It is a working trade, practised in draughty sheds with larch, oak and Douglas fir stacked against the wall, and it depends on a handful of very particular techniques.

Clinker Planking, Lap by Lap

Most traditional boats on this coast are clinker-built, meaning each plank overlaps the one below it rather than sitting flush. On a Yorkshire coble, a double-ended hull with a flat run aft, that overlapping construction is what gives the boat its flexibility in a steep sea. Planks are usually of larch or spruce, tapered along their length, and each one is offered up dry, adjusted with a plane, then fastened with copper nails driven through the lap and clenched over a rove inside.

Setting a plank is slow work. The shipwright must read the run of the hull by eye, judging the taper so the lands sit fair from stem to stern. Get it wrong and the boat will look hollow or hog-backed from ten paces, no matter how well it floats. A good plank is fitted in a day; a bad one is argued about for years.

Steam Bending: Oak Ribs and a Box of Steam

Frames, or ribs, hold the planking in shape, and they are almost always grown oak bent while hot and wet. Green oak will not bend cold — it simply snaps — so the timber goes into a steam box, a long wooden or copper tube fed from a boiler. The rule of thumb is roughly one hour of steaming for every 25mm of thickness, though most boatbuilders judge it by feel and experience rather than a stopwatch.

When the rib comes out it is scalding, pliable and unforgiving. There are perhaps thirty seconds to get it into the boat, clamp it against the planking and drive the copper tacks home before it starts to set. Two people work as a team: one holds and calls the shape, the other fastens. The smell of hot oak and steam in a cold shed is one of the defining scents of this coastline.

Caulking, Oakum and Keeping the Water Out

Wooden hulls move. A boat kept afloat swells tight; a boat left ashore in a yard dries out, opens at the seams and will leak for days when relaunched. Caulking is how the gaps are managed. On a carvel hull, where planks sit edge to edge, the seams are wide enough to take oakum — teased hemp fibre — driven in with a caulking iron and a mallet, then paid over with pitch or a modern compound.

Clinker work is different. The lands between laps are tight, so the seal is thinner: traditionally a putty of linseed oil and whiting, or these days a flexible polysulphide compound, worked in with a narrow iron and finished flush. Below the waterline, the old practice was to coat the hull with a mixture of tar and tallow to keep the worm out and the timber supple. It is messy, it smells strongly, and it still works.

Tools That Reward Patience

The tool kit in a traditional shed has barely changed in a century. Most of it is hand-powered, and that is deliberate — these tools let the shipwright feel the timber rather than simply cut it.

• Caulking mallet and irons — a hardwood mallet with a long, whippy handle so the head does the work, plus a set of irons for making, reefing and creasing the seam.
• Drawknife and spokeshave — used for shaping frames, spars and oars, taking shavings rather than sawdust.
• Gutter adze — for hollowing out keels, stems and blocks where no plane will reach.
• Rove punch and hammer — for clenching copper nails over their roves, the fastening that holds a clinker hull together.
• Bevel, marking gauge and a good eye — the last of these being the hardest to buy.

Power tools have their place, particularly for heavy ripping and sawing, but the final fitting on a wooden boat is almost always done by hand.

Passing the Skills On

The real risk to this trade is not materials or moorings but time. A repair that takes a fortnight can be undercut by a fibreglass replacement in an afternoon, and few young people can afford to spend five years learning a craft with a modest wage at the end of it. What keeps the knowledge alive is a mixture of apprenticeships in the remaining yards, evening classes in woodwork, heritage harbour trusts and the owners themselves — the people who bring a leaking coble in for a new garboard and stay to watch.

If you moor or sail on this coast, there is a practical way to help. Ask who built your boat, ask who last caulked her, and take her to a yard that still knows. Pay for the slow job. A hull that is repaired properly, plank by plank, rib by rib, will outlast most of us — and the skills that keep her tight will be there for the next generation to learn.