Hull Ribs and Stringers

Fingers need tape.

By this time you will discover that the lashing cord has taken a bite out of your fingers. In my case, some of the knots got to my little finger and some to my middle finger, so liberal sports tape was a must before continuing with the ribs. The number of knots is different for different boat lengths (the ribs are installed every 4 inches), but for this boat it was 1056 knots and 323 lashings (depending on how you count knots, it can be more or less). The bottom line is–bring sports tape.

Stringers are installed on the first five ribs and lashed on. These provide the basic outline of the complete hull. The majority of the ribs are installed by eye–cut to length so that they fit loosely (a small space between them and the stringers) and slipped into the the gunnel slots. The ribs are then lashed to the stringers and keel. These 187 lashings took almost four hours to apply. I should say “only” four hours, since I thought it would take much longer.

Corey installed most of the ribs quickly and left a few for the student.

The next step is to install the deck slides and floor. There are three rails that allow you to slide your equipment bags into the bow and stern. These rails are lashed once between each deck rib, except twice in the cockpit, so there are many fewer lashings than for the stringers. Each rail is notched on its top surface at each lashing location so that the lashing cord is protected. Similarly, the flooring is installed with notches for the lashing so that it is not abraided.

The seat panels and gear rails are notched to protect the lashing cord.

Two of the stringers are cut short at the bow to provide the distinctive bow shape, while the third one is chamfered to fit snugly onto the bow plate.

Two of the stringers are cut short.

The third stringer is lashed onto the bow plate, which provides part of the distinctive shape and dynamic response of the bow.

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