The frame structure

The Keel

The keel is the main structural member and backbone of a ship or boat. The Pepe Berrou’s full back bone is formed by its stem, keel, deadwood and stern beam. It’s keel was laid at exactly 5 degree from level as our reference member, so the boats ribs would stand 90 degree from level. The Stem was built to look like a solid wood stem. To say the least, it’s overkill and purely for looks.
The shoe is made of a 10 inch wide C channel, with a 1/2 inch thick web and doubled with an other 1/2 inch thick flat bar; total shoe base of 1 inch.

Keel laying celebration, October 8th, 2005

keel_laying (Small)

“Keel laying is the formal recognition of the start of a ship’s construction. It is often marked with a ceremony attended by dignitaries from the shipbuilding company and the ultimate owners of the ship. Keel laying is one of the four specially-celebrated events in the life of a ship; the others are launching, commissioning, and decommissioning.” Wikipedia

The Ribs

The ribs are the transverse frame members of the boat. Each rib forms a full ring including the floor member and the deck beam. The Pepe Berrou has 15 ribs evenly spaced (3 ft apart) and standing perpendicular to the water line. All the ribs were numerically cut out of 1/4 thick plate. They were precisely cut with notches to accommodate the longitudinal frames and draining holes. 
All the ribs have a 4 inch flange. Most of the ribs are T profiled. The far forward and far back ribs are L profiled with the flange pointing towards the center of the boat to facilitate painting and maintenance. The web of the rib profile is 4 inch on the sides and 3 inch for the deck beams.

 

The Longitudinals

The longitudinals are the structure running length wise. The longitudinal tie the ribs together and provide stiffness to the plate between the ribs. Our longitudinal frames are made of 2 inch by 1/4 inch flat bar and run from he bow all the way to the stern.

 

All the structural choices were made to to meet ABS and Transport Canada Structural standards.

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