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^AIL AREA. 
S. A. — Sail area to be obtaine d as follows, and the 
square root of this area to be the VS A in formula: 
MAINSAIL. 
A. Measured from the top of the boom (under the 
pin for outhaul shackle on traveler, or clew slide, when 
hauled chock out) to the gaff under the pin of the sheave 
of the topsail sheet, provided the peak cringle of the 
mainsail does not extend beyond the pin ; in the case of 
the yacht having no topsail, or of the peak cringle extend- 
ing beyond the pin of the topsail sheet sheave, then the 
measurement to be taken to the peak lacing-hole. 
B. Perpendicular to A, measured to underside of gaff 
close in to the mast. 
C. Measured from top of boom over the pin of the 
sheave or outhaul or end of clew slide to underside of 
gaff close in to the mast. 
D. Perpendicular to C, measured in to the mast, in a 
line with the top of the boom, or to tack cringle of main- 
sail, if below top of boom. 
CLUB TOPSAIL. 
E. Measured from upper side of gaff close in to the 
mast to pin of sheave for topsail sheet, or to lacing-hole 
in club. 
F. Perpendicular to E, measured to lower lacing-hole 
in sprit. 
G. From lacing-hole to lacing-hole in sprit. 
H. Perpendicular to G, measured to pin of sheave for 
topsail sheet in gaff ; or to upper lacing-hole in club. 
JIB HEADER. 
K. Measured from top of gaff close in to mast to pin 
of halyard sheave in topmast. 
L. Perpendicular to K, measured to pin of topsail 
sheet sheave in gaff; or to upper lacing-hole in club. 
LUGSAIL. 
To be measured as mainsail, except as follows : 
A. Upper end measured to peak lacing-hole in yard. 
B. and C. Forward end measured to lower lacing-hole 
in yard. 
D. Lower end measured to tack cringle of mainsail, if 
below top of boom, or forward of mast. 
HEADSAILS. 
I. The perpendicular I to be measured from the deck 
at the foreside of the mast to where the line of the luff 
of the foremost headsail, or of the spinnaker halyard, as 
the case may be, when extended, cuts such perpendicular. 
In the case of a schooner the perpendicular I shall be 
measured upon the foremast, unless she has a main spin- 
naker the height of which exceeds the perpendicular upon 
the foremast, in which case the excess shall be added to 
the perpendicular I. 
J. The base J to be measured from the foreside of the 
mast to where the line of the luff of the-foremost headsail 
when extended cuts the bowsprit, other spar, hull, etc., 
as the case may be. In all cases, if the distance from 
the center fore and aft line of the mast to the outer end 
of the spinnaker boom exceeds the distance from the fore- 
side of the mast to the bowsprit end (where cut by the 
line of the luff of the foremost headsail), the excess shall 
be added to the base of the fore triangle. In the case of 
a schooner, the base J shall be measured from the fore- 
mast, but if the main or longest spinnaker boom exceeds 
the before mentioned distance, the excess shall be added 
to the base J. 
In the case of a yacht having no headsail, but carrying a 
spinnaker, the area for headsail shall be computed from 
the length of spinnaker boom, and the height from deck 
to where the line of the halyard of the spinnaker when 
extended cuts the mast. 
A spinnaker may have a headstick or board not longer 
than one-twentieth the length of the spinnaker boom, but 
rot a foot yard, or more than one sheet, or any other 
contrivance for extending the sail to other than a tri- 
angular shape. 
In the case of a yacht carrying a square sail, or square 
topsail, or raffee (together or separately), the actual area 
of the same shall be computed ; and if such area exceed 
the area of the fore triangle, the excess shall be used in 
the total area for determining the rating. 
FORESAIL OF SCHOONERS. 
To be measured as mainsail, except that the lower end 
of A is to be taken at foreside of mainmast, in a line with 
main boom gooseneck. 
Directions for Measuring Sails. 
The measurer shall take measurements I and J for fore- 
triangle, G and E for club topsail, and the length of spin- 
naker boom. If the other measurements are supplied by 
the sailmaker, the measurer shall check them by measur- 
ing the following : 
Boom, from lower end of A to lower end of D. 
Gaff or lugyard, from upper end of A to forward end 
of B. 
Club topsail, sheet to outer lacing-hole. 
In cases where it is necessary for the official measurer 
to measure the sails, he shall do so in the following man- 
ner : Take the length of boom from mast to pin of 
sheave for outhaul, and length of gaff from mast to pin 
of topsail sheet sheave or lacing-hole, as the case may 
require ; then hoist the sail with the tack fast and set the 
peak and Kiff up taut, and let go the topping Lfts so that 
the weight of the boom comes on the leach of the sail. 
With a line" and tape, measure the leach and luff and the 
diagonal C. For the headsail measure the height I, and 
the distance J, as provided for in the section dealing with 
headsail. For topsail the sail should be hoisted and 
marked in a line with the gaff ; then lowered and the 
other dimensions taken. From the measure^ients so 
taken a sail plan should be made and the other above- 
specified measurements obtained therefrom. 
Calculation of Sail Areas 
MAINSAIL. 
Multiply A by B and C by D, and add the two products 
together and divide by 2. 
YARD TOPSAIL. 
Multiply E by F and G by H, and add the two products 
together and divide by 2. 
JIB HEADER. 
Multiply K by L and divide by 2. 
HEADSAILS. 
Multiply I by J and divide by 2. 
LUGSAILS AND HEADSAILS. 
No deduction is to be made from headsail area on the 
score of any portion of the lugsail area ahead of the mast. 
SAILS BOaNDED BY CURVED EDGES. 
Any increase in the area of sails due to curved edges, 
extended by battens or . otherwise beyond the line be- 
tween the points for measurement, shall be computed as 
follows: Multiply the base E by two-thirds of the per- 
pendicular P. 
DISPLACEMENT. 
D — Displacement to be obtained as follows : 
At points dividing the length of the load waterline into 
five equal pai'ts, find areas of immersed cross sections in 
square feet; from the areas in square feet obtained and 
load waterline length, find approximate displacement in 
cubic feet, which will be the D in formula. 
LIMIT OF L.W.L. 
One-half of any excess of L.W.L. over one hundred and 
fifteen per cent, of L shall be added to the rating meas- 
urement. 
LIMIT OF DRAFT. 
Limit of draft in feet — .133 (rating measurement) + 
2.66. 
Any excess of draft, exclusive of centerboard, as per 
above formula, shall be multiplied by five and added to 
the rating measurement. 
The draft of any vessel, exclusive of centerboard, shall 
not exceed i8ft. 
LIMIT OF SAIL AREA. 
Any excess of the square root of sail area over 135 per 
cent, of L, shall be added to the rating measurement. 
All measurements of hull shall be taken with only such 
persons on board as shall be required by the measurer. 
The L.W.L. shall be the distance in a straight line be- 
tween the points furthest forward and furthest aft, where 
the hull, exclusive of the rudder post, is intersected by 
the surface of the water when the yacht is afloat in racing 
trim. 
All measurements specified may be certified to by the 
designer, in a certificate to be filed with the measurer of 
the club, but such certificate must be accompanied with 
drawings, showing the measurements taken and the true 
line of flotation of the vessel when measured in racing 
trim, which line of flotation must be verified by the meas- 
urer, before any certificate of measurement shall be ac- 
cepted by the secretary. 
If from any peculiarity in the build of a yacht, or 
other cause, the measurer shall be of opinion that the 
rule will not rate the yacht fairly, or that in any respect 
she does not comply with the requirements of these rules, 
he shall report the circumstances to the Regatta Com- 
mittee, who, with the measurer, after due inquiry, shall 
award such a certificate of rating as they may consider 
equitable, and the measurement shall be deemed incom- 
plete until this has been done. 
Classification. 
SCHOONERS. 
All over looft., rating measurement. 
Not over lOoft. and over 80ft., rating meas- 
Not over Soft, and over 64ft., rating meas- 
Not over 64ft. and over 51ft., rating meas- 
Not over 51ft., rating measurement. 
SINGLE-MASTED VESSELS AND YAWLS. 
All over lOoft., rating measurement. 
Not over looft. and over Soft., rating meas- 
Class A. 
Class B. 
urement. 
Class C. 
urement. 
Class D. 
urement. 
Class E. 
Not over Soft, and over 64ft., rating meas- 
Not over 64ft. and over 51ft., rating meas- 
Not over Sift, and over 40ft. rating meas-. 
'from," insert the words "a 
Class F. 
Class G. 
urement. 
Class H. 
urement. 
Class I. 
urement. 
Class J. 
urement. 
Course I. Rule I., p. 215. 
In line two' after the word 
stake boat to." 
Rule IV., Sec. I., p. 217. 
Add at the end of this section, the words "but this rule 
m.ay be suspended for proper cause shown in the discre- 
tion of the Regatta Committee." 
Rule VIII. Strike out second and third paragraphs, 
"Schooners" and "Single-Masted Vessels and Yawls," 
and substitute : 
Classes A and F, one man for every 250 sq. ft. of sail 
area, or fraction thereof. 
Classes B, C, D, E, G, H, I, J and K, one man for 
every 300 sq. ft. of sail area or fraction thereof. 
Amend time allowance table as follows : 
P. 229 — On line 8, change words "60 per cent." to read 
"80 per cent." On line 10, change formula to read 
Strike out lines 13 and 14, and substitute: 
,2880 2880. 
"Practically the formula is — l/jj ) 5 eight-tenths 
of 3,600 being 2,880." 
Alter example given on p. 230 to new formula. 
Amend tables of "Time Allowance for One Nautical 
Mile in Seconds and Decimals" on p. 231, 232, 233, 234, 
235, 236, 237 and 238 to new formula. 
Messrs. Charles G. Davis and Walter M. Bieling have 
formed a co-partnership under the firm name of Davis &: 
Bieling, and will transact a general yacht brokerage busi- 
ness at 50 Broadway, New York city. 
Mr. Wilson Marshall, Vice-Commodore of the Larch- 
mont Y. C, is to have built from designs made by Messrs, 
Gardner & Cox, an auxiliary schooner yacht 135ft. long. 
The Townsend & Downey Shipbuilding Co., Shooter's 
Island, will build the yacht. 
