Curves and Corners

From the beginning of building a boat, a grand attempt is made to follow plans, if you have some which I do not, and keep both sides symmetrical. That applies especially to the level, straight and and flat parts.

But the most visible and beautiful lines on a boat are at the edges, on the side, and the transom end. Those are mostly curves that are not so easy to measure, so the eye makes the final judgement on whether a line looks fair and pleasing.

This time it was figuring out the outer, lower curve of the transom. As usual, it starts with a pencil on paper. Then, I often use a thin bendable stick, shown at the bottom, to visualize the full size 3D shape.. Below, the bottom pieces complete the line, and compliment the top deck edge molding (sheer line), in smooth symmetrical curves.

Here is the side view of the full size cardboard and 1/4″ plywood patterns in preparation for the curved back corner lines.

Admittedly, the wooden boat building world is small, but when I hear of another builder, I like to meet and discuss construction ideas with them. So, it was my pleasure recently to be introduced to Charles Onyon, who has an interesting resume’ including working four years at Van Dam Custom Boats. A few years ago, I visited and took a tour of their inspiring shop, likely the premier boat building company in the country.

Charles came over to visit, and gave a far more educated scrutiny of the boat than the average house guest. He knows boat building including wood types, joinery, paint selection, and engineering for strength and esthetics. He is smiling because most people don’t know he is a celebrity . . .

Boat Hull Strength

Building a boat from scratch creates the continual question of whether each new step of construction is going to be strong enough to hold it together against the forces of water and trailer transport.

Two main bottom runners go from the transom forward past the cockpit, and two side runners go up half way. The fiberglass fabric epoxied to the hull also adds stiffness, but at the front and back, it needs support points that are strong enough to lift the boat up.

At the back, white oak beams frame the inner transom, and the slots were cut to add side boards.

Next, the side beams are added over the side hull runners, and upright posts are made to tie the back beams to the cross frame and seat structures.

As usual, as many joints as possible are strengthened with dowels.

The dowels will never be seen after this step, and much of the beam framework will be hidden behind the seat or under the floor, and may be taken for granted. But if you ride in the boat, and you return to the dock alive, you may assume the engineering and construction made the grade. What’s inside a person floats a good life also.