THE HAPPY CLAM

How to build a lightweight boat that doubles as a cartop luggage holder, including instructions, diagrams, gussets and gunnels.

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This lighweight boat doubles as cartop storage and suits the first-time boatbuilder.

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By Larry D. Warren and MOTHER'S staff

This job shouldn't be beyond the skills of a novice carpenter.

IT'S NOT OFTEN THAT YOU CAN have your cake and eat it too, but if you find yourself whiling away your free hours outdoors—camping, boating or just messing around—and don't mind spending about $ 100 and a few days of that leisure time puttering with a delightfully simple wood project, that luxury can be yours any time you please. This 8'-long craft isn't just a water-worthy two-person row-boat, but at the flip of a latch becomes a lock-able, weatherproof cartop carrier built to hold about 30 cubic feet of goods that might otherwise have been left at home.

As a water lover—one who plans outings and vacations around fishing, lakeside camping and searching out ponds and rivers—I faced a choice: Hit the deep blue by laying down some long green for the purchase of a proper johnboat (and perhaps a trailer, registration and towing package on top of that), or go on camping trips without. Neither option appealed to me, so I took a third tack and, although I'm no boatwright, chose to build a boat from scratch, using basic techniques and materials simply because that's all I had to work with.

All told, the project required three 4' X 8' sheets of ¼” marine plywood. [Editor's Note: Similar boats have since been built using the less expensive B-C exterior panels, but it's still anyone's guess as to how well they'll hold up over time.] In addition to the plywood, I used 10 strips of ¾” X 1¼” blind stop (about 100 linear feet altogether; they come in random lengths of 10' to 12' and should bow without breaking), a 26” scrap of 1 X 4, a 1 ½” X 4' section of brass-plated continuous hinge, two 1 ½” X 3 ½” galvanized safety hasps, six reinforced staple plates to fit the hasps, two 3 ½” eye-bolt snaps and a 1¼” X 3 ¾” locking draw pull catch.

I salvaged the oars and pinned lock sets from another boat. You'll need two pairs of oarlocks for this dinghy, since they also serve to secure the oars when the vessel's folded, creating a convenient set of carrying handles. Four small eyebolt snaps hold the lock shafts in place.

For fasteners, I bought 800 No. 6 X ¾” anodized drive screws, 18 in a No. 8 X 1½” size and 16 more, 3” long. Eight No. 8-32 X 1” flathead machine screws and 32 No. 8s, each ¾” in length, were used to hold the metal hardware. The wood joints and seams were glued and sealed with four 10-ounce tubes of exterior construction adhesive. Finally, to button up the box along the edges when it's used as a carrier, I cut two 12” X 48” strips of colored vinyl fabric and bought two dozen pairs of plated snap fasteners.

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