The table on the left gives the speed of waves of different wave lengths in deep water. “Deep” in this context is not an absolute value, but is relative to wave length. The simple relationship starts to to breakdown when the depth of the water is less than 1/4 th the wave length. At that depth the bottom exerts sufficient drag on the wave to slow its motion and thus decrease the wavelength [equations and more about wave speed].
The WaterRower Classic Rower is unsurpassed in terms of design refinement. WaterRower Classic Rower has a patented WaterFlywheel design emulates rowing like no machine before it. Smooth, silent and storing conveniently upright the WaterRower Classic Rower is perfect for any user and in any environment. The WaterRower Classic Rower has an unique patented WaterFlywheel has been designed to emulate the dynamics of a boat moving through water.

Great rower. I would rate it 5 stars if it weren’t for the meter. At 27 strokes per minute, it takes me 15 minutes to row 500 meters. This is way off standard. So I can’t compare myself to online charts or do recommended workouts because the distance is so off. On some level, who cares, but I wish it worked. Will be talking to the manufacturer about it.
Outside of resistance type, we found the number-one arbiter of ride feel to be cord quality. Water ergometers tend to employ nylon cords, while air ergometers feature metal chains — a durability factor we anticipated would result in our favoring air. But while all three water rowers aced our expectation of smooth, high-tension strokes, perfecting the chain seems to be more difficult: Some tug with just a slight rumble, others feature bouncy, grinding chains that are incredibly loud, something akin to angry snoring. As for nylon, the best wind and unwind like elastic silk — no slack, no sound, no catching, just perfectly even tension throughout the stroke.