The rules printed below al.e those drawn up and adapted by the Marblehead Model Yacht Club. This set of rules did not meet with the approval of some of the Mid-West clubs and have been submitted to the various organizations for acceptance or modification.
Any boat built to these rules as they are, will be eligible for any MYRAA events.
HULL RESTRICTIONS
Hull 50 in overall, 1/4-in leeway either side of 50-in measurement allowed. Movable keels, fin keels, center-boards, bilge boards, lee boards, bowsprits, and overhanging rudders prohibited. Not allowed to change weight of lead during a series. Bumpers not included in overall length but are limited to 1/2-in overhang.
SAIL AREA MEASUREMENTS
Sail area not to exceed 800 square inches. No fore triangle measurements, only actual sail measurements measured.
REGULATIONS FOR MEASURING
All points of measurements shall be definitely marked by a black band 1/16 inch wide on spar or stay beyond which the sail must not extend, such band to be put on by the measurer
The formula for computing area of sail is as follows:
HEADSAIL OR JIB
The product of the length of the luff multiplied by the shortest distance between luff and clew divided by two (2).
MAINSAIL
When this sail is of a triangular shape the area is found by multiplying the length of the luff by the shortest distance between measuring mark at end of boom and the mast and the product divided by two (2).
BATTENS
Four battens not more than 4 inches long in mainsail and three (3) not more than (2) inches long in jib are allowed.
HEADBOARDS
Headboards are allowed, not exceeding 3/4 in across base.
SPARS
Any increase of sail area obtained by the use of bent spars will be measured as a bow and included in the sail area.
Hollow spars are allowed.
Models must always sail with spars as measured. Spars not to be included in the sail measurement.
The greatest diameter of the spars is limited t® 3/4 of an inch.
There are no restrictions as to Scantlings or materials.
