INTEGRAL STRENGTH-GRID SYSTEM™-- INTEGRAL KEEL, TANKS, AND SUB-SOLE TO ENHANCE STRUCTURAL INTEGRITY.
The internal keel, tanks, and sub-sole on a Caliber are actually integrated as part of the hull. The keel is not just bolted on, the sub-sole doesn't just support furniture, and the tanks are not just dropped in place. Each object is heavily bonded into place. We call this method our Integral Strength-Grid system. Compared to the other boats, our integrated structure offers many significant advantages:

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 A deeper bilge prevents water from sloshing into lockers while the boat is heeled.
♦ No external keel bolts to maintain or cause leaks.
♦ Weight of keel and primary sea loads are evenly distributed throughout entire grid structure.
♦ Integral tanks enhance the hulls strength, and serve as a double bottom that can prevent flooding if the hull is holed at the location of the tanks.

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 Ballast is sealed within the keel, as a safeguard against flooding if the keel is holed.

Integral Strength-Grid System™
Water-tight Collision Bulkhead heavily glassed in place bonded to the hull and the structural dividers forward of it. This creates an extremely strong matrix structure.
Integral tanks, lids, and baffles add tremendous strength to the sub-sole structure to help spread loads evenly over hull. Because the lids will be heavily bonded in place, any surface are of the tanks, will act to form a double-bottom.
Structural sub-sole will be laminated around it's entire perimeter adding a complete bonding between grid structure and hull. Bonding all structures together. Keel, engine, and primary sea loads will be spread evenly over entire bottom surface area.
Stringers are heavily glassed into position with extra heavy laminates and resins. Entire grid structure acts as a single strong unit.