2 Significant wave height H 13 or H s or H sig as determined directly from the time series of the surface elevation is defined as the average height of that one-third of the N measured waves having the greatest heights.

Wave height boat length. For example using the minimum 30 percent wave height to boat length if your boat is 40 feet long then the wave-height danger zone starts at waves 12 feet high 40 x 30. Speed reduced some pounding at speed. If yes then you need to know if the waves will be breaking.

From shore varying from 10 to 100 meters the wave heights are shown below. What height do you suppose this wave is. If you can sight along several wave tops in a row when in a trough then the waves are about three feet high which is what most of us judge to be six-footers Sight along the gunwale about two feet off the water to judge smaller waves.

Wave heights have all been equally exaggerated to assist visualisation. The distance between the crest and the trough. The distance of x 3048 m corresponds to the distance of 100 ft which is the closest boats can travel to the shore with a wake in the state of Wisconsin.

Both models are customizable. The distance between two identical points on successive waves for example crest to crest or trough to trough. Normal sea-wave heights average less than 2 meters 66 feet but have been observed reaching 10 meters 33 feet Once the wave steepness reaches the critical 17 ratio of wave height to wavelength the wave breaks and openocean breakers are formed termed whitecaps.

In rolling waves of course most any vessel any size will simply cruise or sail. Thus for a vessel 900 feet long the design wave height would be 1130 33 feet high. Then the individual wave height of each wave is again the difference between maximum and minimum elevation in the time interval of the wave under consideration.

Speed reduced some pounding at speed. At 145 foot it is the most nimble and maneuverable of Sealver Wave Boat offerings. In a small boat your eye might be about four feet above the waterline.