The coxswain (or simply the cox) is the member who sits in the boat facing the bow, steers the boat, and coordinates the power and rhythm of the rowers - by communicating to the crew through a device called a cox box and speakers. They usually sit in the stern of the boat, except in bowloaders where the coxswain lies in the bow. Bowloader are usually seen as the coxed four and coxed pair type of boat.
The distinction between rowing and other forms of water transport, such as canoeing or kayaking, is that in rowing the oars are held in place at a pivot point that is in a fixed position relative to the boat, this point is the load point for the oar to act as a second class lever (the blade fixed in the water is the fulcrum). In flatwater rowing, the boat (also called a shell or fine boat) is narrow to avoid drag, and the oars are attached to oarlocks ( also called gates ) at the end of outriggers extending from the sides of the boat.[8] Racing boats also have sliding seats to allow the use of the legs in addition to the body to apply power to the oar.
Single, and double sculls are usually steered by the scullers pulling harder on one side or the other. In other boats, there is a rudder, controlled by the coxswain, if present, or by one of the crew. In the latter case, the rudder cable is attached to the toe of one of his shoes which can pivot about the ball of the foot, moving the cable left or right. The bowman may steer since he has the best vision when looking over his shoulder. On straighter courses, the strokesman may steer, since he can point the stern of the boat at some landmark at the start of the course. On international courses, landmarks for the steersmen, consisting of two aligned poles, may be provided.
One of the major deciding factors between water and air rowers is price. Water rowing machines are often found in higher price ranges with the lowest model going for $700 and the best models starting around $1,100. Air rowers are found in every price range starting at $300 and going as high as $1,000+. The affordability of air rowing machines makes them very popular.

The WaterRower Natural is outfitted with a Series 4 performance monitor that's designed to balance technical sophistication with user-friendliness. The monitor--which includes six information and programming windows, six QuickSelection buttons, and three navigation buttons--displays your workout intensity, stroke rate, heart rate, zone bar, duration, and distance. Plus, the monitor is compatible with an optional heart rate chest strap and receiver, which helps you optimize your workout and achieve your exercise objectives.
The rowing machine itself is unlike any other on the market with its patented water filled flywheel. It is hard to exactly copy the action of a scull on the water, but the mechanics of the flywheel spinning in water comes in a close second on dry land. The fact that the water is 800 times denser than air means that there is no need for any extra resistance or dampening that you will find in normal air rowers. The faster you pull, the more resistance is generated giving it infinite variability. However, if you want to be able to practice rowing with a faster stroke, you will have to reduce the amount of water in the tank unlike an air rower where you just have to adjust the baffle.