What Does Comfort Ratio Mean On A Sailboat

Saturday, September 11, 2021

September 11, 2021

What Does Comfort Ratio Mean On A Sailboat

17032011 To then find the boats SAD ratio just divide its sail-area in square feet SA by its displacement in cubic feet taken to the two-thirds power SAD ratio SA. This term was mainly developed after the Fastnet race disaster.

Pogo 30 Sailboat Specifications And Details On Sailboatdata Com Sailing Yacht Sailboat Plans Sailboat

Of course all of these numbers are indications of how the boat probably will perform.

What does comfort ratio mean on a sailboat. But there is a relatively simple so-called comfort ratio developed by designer Ted Brewer that does provide a reasonable indication of what a boats motion will be like in certain conditions. 13042010 A boat that has a more corky motion is considered less comfortable then one less affected by wave action. A sailboat capsizes ratio is a parameter used to show whether a boat can recover from an inverted capsized position or not.

But even better than my definition are Teds own words on the matter. 22032010 at the Vendee Globe fleet open class designs--generally these boats are very wide shallow boats and they rocket downwind and off the wind like the blazes. This correlation between displacement and comfort is not consistent with.

01012003 Dieter Empachers recent article on yacht ratios By the numbers. Therefore The comfort ratio created by Ted Brewer an expert boat designer builder. Quantifying the motion of a sailboat in a seaway and placing it somewhere along a comfort continuum is sort of how I see Ted Brewers Comfort Ratio.

The formula predicts the speed of the upward and downward motion of the boat as it encounters waves and swells. When sailing to windward however these boats are very poor performers and this is due primarily to. However his motion comfort ratio with displacement in the numerator asserts that added displacement increases comfort.

The faster the motion the more uncomfortable the passengers. 15102011 It isnt really possible to quantify all aspects of a boats motion in a single numerical parameter. Ideally you would have the time and money to hire an expert designer to evaluate the boat.

25052015 Motion Comfort Ratio was developed by Boat Designer Ted Brewer. This is best used to compare boats of similar size. A 26 footer should probably not be compared to a 40 footer using this ratio.

30042010 COMFORT RATIO CRdoes provide a reasonable comparison between yachts of similar type. This was a 1979 race where a storm destroyed several yachts during the last day of. In these conditions the boat stays more upright than if it is sailing to windward.

The intention is to provide a means to compare the motion comfort of vessels of similar type and sizeDo consider though that a sailing yacht heeled. 28022018 In the Comfort Ratio. 26102020 Motion Comfort Ratiowas developed by Boat Designer Ted Brewer.

13122015 In general the lower the DL the less comfortable the boats motion will be in a seaway and the more sensitive the boat is to overloading. 28042015 The SAD ratio is a measure of the power of the sails relative to the weight of the boat. A higher value is better if you like comfort.

Smaller and beamier boats tend to have a lower ratio. CR being used to evaluate sailboat designs. This is a ratio that I dreamed up tongue-in-cheek as a measure of motion comfort but it has been widely accepted and indeed does provide a reasonable comparison between yachts of similar type.

Ted Brewer dreamed up the comfort ratio tongue-in-cheek but it has been widely accepted and indeed does provide a reasonable comparison between yachts of similar type. While sailing is always good for moral a lack of physical well-being in a cruising boat usually obliterates any sense of physical and psychological well-being. Thus the formula predicts the overall comfort of a boat when it is underway.

85 makes several useful points regarding the characteristics of different types of boats. In this case the higher the number the higher the performance but the harder the boat will be to handle. Generally a motion comfort ratio of 30 -35 is acceptable and 35 or more is very comfortable.

17032004 If you look at SADisplDispwll motion comfort ratio beamlengthPHRF etc you get an idea of what the boat is like. Fortunately there are some ratings systems out there that help with this process. It is based on the fact that the faster the motion the more upsetting it is to the average person.

The 30 most comfortable sailboats The Comfort Ratio is as a measure of motion comfort. Author created a formula to assess a boats comfort at sail. 27042018 It sets into relation the displacement of a boat expressed in pounds to the length of her waterline in feet.

Assuming as an example a hypothetical 12000-pound boat with a sail area of 650 square feet you would calculate its SAD ratio by first dividing 12000 by 64 to. I was once on a custom-built racing boat with a SAD ratio of 40. Though originally developed by Brewer somewhat in jest it is now accepted by.

The formula predicts the speed of the upward and downward motion of the boat as it encounters waves and swells. A SAD ratio above 20 is getting into the lively performance category. For example there is something called a motion comfort ratio which gives a sense of the pitching and rolling motions of the boat.

The faster the motion the more uncomfortable the passengers. Thus the formula predicts the overall comfortof a boat when it is underway. Another important design parameter is the Sail Area-Displacement Ratio SAD another nondimensional calculation that expresses the relationship between a boats sail area and its displacement.

Will have a much steadier motion than one bobbing up and down.

Comparing Design Ratios Sail Magazine