According to fitness experts, water resistance is by far the most efficient technology used in a rowing machine, and the result is a realistic rowing experience that provides a better workout with smoother and more fluid rowing. These machines use a paddle that’s suspended in a tank of water, providing a realistic sensation of rowing outdoors. Extremely quiet running, as you row the only sound you’ll hear is the gentle splashing of water moving with each stroke, which serves to enhance the realistic experience of this style of rower.
In sweep or sweep-oar rowing, each rower has one oar, held with both hands. This is generally done in pairs, fours, and eights. In some regions of the world, each rower in a sweep boat is referred to either as port or starboard, depending on which side of the boat the rower's oar extends to. In other regions, the port side is referred to as stroke side, and the starboard side as bow side; this applies even if the stroke oarsman is rowing on bow side and/or the bow oarsman on stroke side.