Decreasing  speed of waves as water becomes shallow has dramatic consequences on the beach. As the waves slow, their profile (Figure on right) is laterally compressed and since each wave must carry the same energy it becomes higher. As the wave approaches shore this process continues until the height exceeds 1/7 th the wave length and the wave becomes unstable. Then the wave breaks.
Originally made from wood, shells are now almost always made from a composite material (usually a double skin of carbon-fibre reinforced plastic with a sandwich of honeycomb material) for strength and weight advantages. FISA rules specify minimum weights for each class of boat so that no individual team will gain a great advantage from the use of expensive materials or technology.
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.
This is a company known for quality as well as stewardship for over 20 years. WaterRower hand-crafts their rowing machines to be more than just a workout machine, but also a work of art as well. Also, WaterRower is and has been on the cutting edge of environmental sustainability with their use of the best hardwoods coming from renewable forests. We’re in excellent hands here.
Water machines are generally quieter than air rowers - you can still hear the water moving in the tank, but users tend to find this a pleasant ambient noise. Water rowers also tend to require little maintenance. Because there's a tank full of water involved, however, these can be very heavy, and larger than most other rowers: if you have a smaller home, a less-than-permanent workout space, or you move frequently, these might not be best for you. And because they're so high-performing, they do come at a high cost.
The advantages with air rowers is that there is smooth action; there is only small wear and tear to its mechanism; its automatic feature adjusts according to your rate of strokes; and there is a wide range of the resistance readily available in replicating the feel of rowing through the waters. The only disadvantage of this machine is that it tends to be noise indoors.
 Bring the unparalleled full-body workout of on-the-water rowing home with the premium design and feel of the XTERRA Fitness ERG600W Water Rower. The full body rhythmic nature of rowing makes it wonderfully efficient at burning calories while also developing flexibility and strength. Plus, the "zen-like" water movement you hear from the ERG600W multi-bladed impeller can be soothing and meditative. The large and easy to read 5.5" LCD console with height and angle adjustment includes motivating programmable modes to keep you involved, inspired, and reaching your goals.
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.
As Stamina’s first water rower, the Wave Water Rowing Machine 1445 has all the necessities for a realistic, effective workout. Rowing on this machine feels and sounds like rowing in real life, making this a great option for those who are seeking an affordable water rower for indoor training. But even if you aren’t an avid oarsman or oarswoman, this machine truly offers a total body cardiovascular workout that’s enjoyable for everyone.
The First Degree Fitness Challenge AR (Adjustable Resistance) is designed and engineered by professional rowers and craftsman using only the highest degree of quality components – ensuring complete satisfaction in function, performance, and reliability.  With its patented Fluid Technology, First Degree Fitness has incorporated the truest emulation of sensation, sight, and sound of real on-water rowing captured in the private setting of your own home.
Noise level is another large factor that tips the scale more towards water rowers. Air rowers make a fairly loud “whooshing” noise every stroke, which makes them bad for people who like watching TV, have sleeping children, live in apartments, or like working out early in the AM. Water rowers do make some noise but the splashing of water in the tank is a lot quieter and more soothing than the fan noise produced by air rowers.

The WaterRower Classic is handcrafted in solid American black walnut, which may vary in color from rich brown to purple/black. The black walnut was chosen due to its marvelous engineering properties, especially its ability to absorb sound and vibration, which enhances the WaterRower's quiet performance and smooth operation. Black walnut, like all woods used in the construction of the WaterRower, is a premium hardwood with incredible longevity and dimensional stability. In addition, the wood is harvested from replenishable forests and is hand finished with three coats of Danish oil to give it a deep luster and warmth.
Note: Some states do not allow limitations on how long an implied warranty lasts, so the above limitations may not apply to you. Some states do not allow the exclusion on limitation of incidental or consequential damages, so the above limitations or exclusions may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
WaterRower Dimensions: 83" x 22" x 21" / Weight: 108 Lbs (At Minimum Water Level)Built For Home Use & Practically Maintenance Free..., Rowing Machine Targets All Major Muscle Groups (84% Of Total Muscle Mass) W/ Excellent Adjustable Resistance LevelsMade W/ The Elegant & Desirable Solid Cherrywood That Darkens W/ AgeBoasts A Patented Water Flywheel That Mimics The Natural Dynamics Of Rowing Yet Suitable For Users W/ Joint Concerns (Chlorine Tablet Is Available Free Of Charge)Enjoy 1 Year Manufacturer's Warranty (Upgradeable To 3-Year Parts While 5-Year Frame Is Free Of Charge W/ Registration) read more

The machine was easy to put together and worked well mechanically. The problem is the electronic monitor. The strokes/min registered as double the actual pace, and the distance registered as 1/10th the actual distance. I contacted customer support via email and their response was slow and inadequate. I am returning the machine and plan to buy a WaterRower.
Our Wooden Rowing Machines are Made in the USA using hardwood from only replenishable sources. We strive to manufacture rowing machines that are of a stylish design and built to last, while maintaining our commitment to eco-friendliness. Our Rowing Machines are functional fitness furniture, designed not to be hidden away like other unsightly gym equipment, but to look at home in your living room. Storing in an upright position no wider than a dining room chair, our rowing machines can be easily laid out for a quick indoor rowing exercise session.  
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