Live oak wood is hard, heavy, and difficult to work, but very strong. In the days of wooden ships, live oaks were the preferred source of the framework timbers of the ship, using the natural trunk and branch angles for their strength. The USS Constitution was constructed from Southern live oak wood harvested from St. Simons Island, Georgia, and the density of the wood grain allowed it to survive cannonade; even today the U.S. Navy owns extensive live oak tracts.
Primary materials used in her construction were # white pine, longleaf pine, white oak, and, most importantly, southern live oak, which was cut and milled at Gascoigne Bluff in St. Simons, Georgia. Southern live oak, a particularly dense wood, can weigh up to 75 lb (34 kg) per cubic foot (1,201 kg/m3). Constitution's hull was built 21 inches (530 mm) thick in an era when 18 inches (460 mm) was common. Her vertical hull ribbing was placed 2 in (51 mm) apart instead of the standard 24 in (610 mm). Her length between perpendiculars was 175 ft (53 m), with a 204 ft (62 m) length overall and a width of 45 ft 2 in (13.8 m). In total, 60 acres (24.28 ha) of trees were needed for her construction. Paul Revere forged the copper bolts and breasthooks.The copper sheathing installed to prevent shipworm was imported from England.
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