Official Number and Tonnage. The official number and the net registered tonnage must be cut in on the main beam or the 'th wartship coaming of main hatch.

Draught Marks.— A scale of feet denoting the draught of water must be cut in on each side of the stem and stern-post from one foot below light line to about two feet above deep load draught. These should be in Roman letters or figures, 6 inches long, the lower line of such letters or figures to coincide with the draught line indicated. The figures, after being cut in, should be painted white or yellow on a dark ground.

Space for Seamen. — In arranging crew's quarters, care must be taken that a minimum capacity of 72 cubic feet is allowed for each seaman, and a clear floor space of not less than twelve square feet.

NEW YORK YACHT CLUB RACING RULES. Rating Formula. Yachts shall be rated for classification and time allowance according to the following formula:

Length multiplied by square root of sail area divided by 5 times cube root of displacement.

The result is the measurement for classification and time allowance.

Length. The mean of the length over all, exclusive of bulwarks and rail, and of the length on the load water plane, both measurements to be taken parallel to the middle vertical plane, and at a distance from it equal to one-quarter (4) of the greatest beam at the load water line.

In case the width of the stern on deck exceeds one-half (1) the greatest beam at the load water line, the measurement for the length over all shall be taken to a point abaft the stern, where the continuation of the fair line of the top edge of the planksheer would intersect the quarter beam line.

Sail Area. · - Sail area to be obtained as follows, and the square root of this area to be the√/SA in formula : —

Mainsail. A. Measured from the top of the boom (under the pin for outhaul shackle on traveller, 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 top

sail, or of the peak cringle extending beyond the pin of the topsail-sheet sheave, 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.

E

G

E

N

FIG. 366.

D. Perpendicular to C, measured in to the mast, in a line with the top of the boom, or to tack cringle of mainsail, 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: 4. 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 spinnaker, 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 centre fore-and-aft line of the mast to the outer end of the spinnaker boom exceeds the distance from the foreside 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 foremast, 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 not a footyard, or more than one sheet, or any other contrivance for extending the sail to other than a triangular 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 spinnaker boom. If the other measurements

are supplied by the sailmaker, the measurer shall check them by measuring the following:

Boom, from lower end of A to lower end of D.

Gaff or lug yard, — 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 manner: 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 luff up taut, and let go the topping lifts 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 beadsail 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 measurements 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 Bounded by Curved Edges. Any increase in the area of sails due to curved edges, extended by battens, or otherwise, beyond the line between the points for measurement, shall be computed as follows: Multiply the base E by two-thirds of the perpendicular P.

Displacement.-D. Displacement to be obtained as follows: At points dividing the length of the load water line into five equal parts, find areas of immersed cross sections in square feet; from the areas in square feet obtained and load water line length, find approximate displacement in cubic feet, which will be the D in formula.

Limit of L.W.L.-One half (1) of any excess of L. W.L. over one hundred and fifteen per cent (115%) of L shall be added to the rating measurement.

The L. W.L. shall be the distance in a straight line between the points farthest forward and farthest 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.

Limit of Draught. Limit of draught in feet.133 (rating measurement) + 2.66.

Any excess of draught, exclusive of centre-board, as per above formula, shall be multiplied by five (5) and added to the rating

measurement.

The draught of any vessel, exclusive of centre-board, shall not exceed eighteen (18) feet.

Limit of Sail Area. —Any excess of the square root of sail area over one hundred and thirty-five per cent (135%) of I 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.

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 by drawings, showing the measurements taken, and the true line of flotation of the vessel when measured in racing trim, which measurement and line of flotation must be verified by the measurer, before any certificate of measurement shall be accepted 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 Committee, 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 incomplete until this has been done.

CLASSIFICATION.

Schooners. - Class A. All over 100 feet, rating measurement. Class B. Not over 100 feet and over 80 feet, rating measurement.

Class C. Not over 80 feet and over 64 feet, rating measurement.

Class D. Not over 64 feet and over 51 feet, rating measurement. Class E. Not over 51 feet, rating measurement.