Pine Bluff daily graphic., 1920-07-11
MEASUREMENT OF ! YACHTS WILL FIX TIME HANDICAP
npOrtaut Point to be Decided on the Eve of Race

$New York, July f0.--Iust prior to :,e starting of the first race for the
 nericass cup this montk off Sandy bolt, Shamrock ", the challenger |d the American defender of the ntoric trophy will be lowed to q
 ueh Brooklyn shipyard for official aasurement. This is very inapor-
 It feature of the big contest and zEc that s going to create consider Ie trouble Upon the outcome Of {e measurement, will depend the he allowance that will exist be- 'Sfeen the craft. No one knows what HE allowance is going to be, all Tough all who are familiar with the
 uation state, that the challenger &sll have to give time to the defend- Tt is going to be an exceedingly diff Yst1lt task to measure the cups fchts For the first time, the big Lee will be sailed under the Uni- xrsal Rule of Measurement. The 8le reads. as follows:
 l{{lssY Yachts shall be rated for classi- Ration and time allowance accord. dsg to the following formula: 18 per tnt of the product of length, multi Med by the square root of sail trea. divided by cube root of dis &ncement."
 ,fThis is an exceptionally eompli- s4ted rule and one that only yachts ,5 ,5sgigners understand For the past
 years in all of Ancriea's cup &ees the measurement of boat for Ane allowance has been one-half of
 & sum of the load water line length
 "a the square root Of sail area. B n 1903 and previous years Messrs. ywer and Hyslop simply measured
 plumb bob from each end into the
 Stcr, floated batten Tn under the
 " and under the stern, measured
 the batter the distance from the 4nmb line to the end of the water
 ac, forward and aft, and substracted e sum of tiese two measure sEents from the deck length. That
 I've them the load water-line length.
 ke sail area was measured according
 arbitrary methods, but it was as- Asned to be and very nearly was the Measurement of the area of the sails, 70 determine the square root of this Xfsea was a simple matter and one 5sim in addition and one III division atermined the rating of the boat. # This was the formula even in 1903, s Though the measurements of boats zbr other races of the New York &acht club of that year were made
 1(ler rule very similar to the one low in force, but this rule having AEen sssnnted early in 1903, and the NaIlenge for the cup races of 1903 Saving been accepted in the fall of 3sal2 the old rule of measurement Tfevaiicd in the last cup race.
 This year, however, the measuring 8 the yuchts will be more complicat 4 involving lot of calculation. The &ad-water line will be measured IFS Heretofofe and then the quarter
 am length will be ascertained. This
 1nension is used as q corrective of xe load water~line and 1t must not
 1th0ut penalty be more than cer- RNn per centagc of the load water #Me length, for a boat of 75 feet &Ater line, the dimension fixed by 10 challenger. this percentage will Fl slightly over 9i per cent. Should
 exceed this percentage one-half of
 excess will be added to the load
 ter line length, in order to consti
 tc the length factor in the calcula-
 U for rating.
 Mfu addition there will be various
 9ts to ascertain whether the build 1llH have made any concave curves or Bitches in the lines of the hull fol so, certain penalties are provided 8 While quite different from that oi Fears ago. the method of measirinp 8Ac sail area is really method oi |3scertaining practically the area of FIG sails. These two measurements 4e length factor and the sail area
 ct0r may of course be taken while boat is in the water. The really #4w feature of the measurement oi *he cup yachts, however, will be the #1ensurcments taken to determine in, racing. The rule governing this kSAdx:
 Enlightenment to be obtained by
 eighiHg are as follows: The load.
 ater line shall be divided into H
 ual parts and the areas of the i'm. rsed cross-sections found in square
 N. From these areas the load.
 Ater line length the displacement,
 cubic feet shall be calculated h, D5mpson's Rule"
 z As It Is impossible to weigh q eur @$ncer the area of the immersed cross. 9fections must be determined. In or .4er to do this it becomes necessa,., 10 place the boat in drydock. after sahe first mark in the water line na, |&nly at the bow and stern but all in, |eby round, the vessel is allowed tf Ekttle on the blocking as the wate, # drawn off so that the load wate, plano should be Horizontal.
 1T one were to erect q perpendicn.
 k wall at the side of the boat. mar.
 @tei to her center line. and finer
 seasure at intervals equal to one
 tnth of the load water line lenptE