What does "Square Blades" mean?
"Square Blades" is a type of training exercise used in rowing. When you see a crew on the water you'll see they twist the handle of the oar as they go forward after finishing the stroke. This is called "feathering" and reduces drag against the oar and, in turn, increases the speed of the boat. Not feathering the oar is called "Square Blades" and helps rowers ensure their oar is coming out of the water cleanly and that their hand heights are level throughout the stroke.