The New York herald. [volume] (New York [N.Y.]) 1840-1920, 1871-04-16
YACHTING.
Tho QUESTIONS Of BIsasuroment and Allow

Tho QUESTIONS Of BIsnsuroment and Allow
a6ce.
TO THE EDITOR or THE HERALD
The subject OF the measuTem mt OF yachts appears
just to be exciting the Yachting fraternity. an
tbs Old vexed question Of how ono yacht should
allow another or DO allowed seems - 10 an open
IueilOn; but If yacntmen could do away with the
idea that the whole superficial feet under water was
resistance the problem could easily be solved.
Yacht clubs have one or two days in the year
when II Is desirable 10 test tn ir models, and It l.
Impossible to do SO when two yachts present tho
same resistance to the water and one carries one
quarter to one-thlrd more canvas than the other,
uni As they allow just what 1t worth to them,
AID II Is very desirable TO establish some standard
by which yachts belonging to clubs may have q
proper apporttOnment Of sail to resistance for re-
gatta Occas Ons.
There can be but one accurate method. and that
1t Is which taxes into consideration tho Resistance
opposed 70 vcssels pro 5rass through the WATER
The san catching the wind u the power which over
comes the resistance. Almost every vessel In club
was built for speed, and the knowledge anu expert
ence Of the builder were brought mo requ.stion
aud the best form his Judgment could decide upon
was given to the yacht; it Is sac that
the nOues arc all equally good
for en2h bat the TACT Is tnat the Ion or two
SOS III goou nOueis having the same Immersed sec
ton midstIlp has tn advantage.
~ iuiS.rate cn'S take an extreme case, viZ.-lm-
meroe your nlnd la Waier. move Il. Opposing Lie
PAIN or back to The RESISTING water; now turn your
ue 81 ti NJ Wsn pass o,oas ,ne water edge
oieiing the palm to the water you encounter far
Greater resistance iha0 w.en tne edgo IN turned;
Wine, III oOth cases tho same amount o. matter and
surface is Immersed, but inc surlace 10
when resistance IS offered Is Tar greater In the
1oimer tGstance than In the latter
Inc long vessel. II - claimed. presents more sur
lace 10 the water nnd 49, therefore retarded Ivy lrc
particles 0i water TO tne boat and TO other aud
the dilerence IN attraction between two boat, Of
tLirt, aud twentl live ieet very slight and IL
vastly more than compensated for by o improve
ment IN the lines Of tue vesse.
Tue longer boat presents her milship section at q
smaller angie IMAM shorssr one. and wnie The
resistance, buth going at tho same speed Is pre-
cisely the same III both Cases, the power propei.
ling the smaller Is used up In giving motion
70 tho water 1t passes through, IN the form OF
waves.
Therefore In the case OF two boats OF caual I'M
mersed m'dsh.p section and equal sd but OF Differ
enl lengths, the longer owes the shorter by eS.
actiy the difference IN the disturbance OF motion
lin ared to the water. rms would, however, lead
mo labyrinth OF mathematical formulas and can.
not be considered. After all the Immersed nidsnIp
section - tile point to be considered.
IL Is the custom Of sahmakers to give certain
amount OF sail To certain en.tn OF boat. To Mus.
larger ones). yacht 70 feet long mas 800 Iuare
lcet o. canvas one 70 feet has . feet OF canvass
~ leet has 800 ieet or Canvas; IRON y 10 ~ lec III
length the ratio OF Increase reduces from eet OF
canvas To one additional foot OF lengtn TO 50 ieet
ior one loot OF length Tn.s OF course Is done with.
out regard TO the resistance opposed to the vessel
Tnus. rs foot vessel may have, as Is Iequenlly tho
Case, greater resistance to overcome than 30 loot
vessel. yeC The latter has. By the slnaxersi rule
nearly double the amount OF sail the former.
claim. then. that lle only true basis from witch
10 establish standard for san Is the amount OF iG.
mersed midship section, or ner resistance. laaIng
that as the basis, give the We sells many square
feet OF canvas for each square foot OF ilnlel.ed
midshlp section.
II yacht owner thinks he can carry more sail
than iEose he Is In Competition VITA let hin allow
Tor what lie has over by far aud equitable rule
Unless some sucn rule as this can ne adopted Lnere
can be no Possibility OF testing tie model OF the
yacht. Very respectfully, IL. A. GOUGE
E!- Measurer Of Atlantic Yacht Club, 254 Broadway,
New York.
ApuII. 4 i.;l.