The rebuild of the spar deck used Douglas Fir instead of White Oak so may appear darker now. The construction was much different than other fighting ships of the day. It was faster & more maneuverable, longer, narrower, straighter, heavier & more rigid than British & French ships of its' class. Internal bracing were cut from single trees & transferred weight evenly along the keel. It was all pegged construction. The "iron sides" used horizontal White Oak planks for the inside & outside layers with Live Oak (75lbs/cu. ft.) planks in between.