SCREWS! Official weight and pitch from anybody! My research has dictated that the reciprocating 3 bladers were around 27.5 tons in weight with a pitch of 34'6" and the turbine screw weighing in at 17.5 tons (can't find pitch) I ask because many of my associates say that the bigguns were 38 tons (!) and the littleun at 28 tons. Personally I find their weights to be a bit over the top considering the the Queen Mary's screws weighed in at over 35 tons (biggest ever made at the time I read). Wouldn't the Mary's have been bigger considering it was twice the tonnage and over 150ft longer. Validation Please!