MH Modification Factors
(D-PN ) modified = (D-PN)(MF)1(MF)2
(HC) modified = (HC)(MF)1(MF)2
All ratings for ONE-DESIGN and OPEN CLASS racing are based on boats being equipped with class approved sails and other class approved equipment. Each competitor shall declare ALL non class approved sails and equipment and shall comply with minimum total crew weight and number of crew. Ratings do not include spinnaker unless specified in tables.
It is expected that boats with underweight crews will add the prescribed weight to meet class rules and that skippers and crews usually compete in the classes in which they sail the best for their combined weight and local sailing conditions. Ratings do not include spinnaker or carbon equipment unless indicated in the Tables or as allowed under one-design class rules.
1) For class normally without spinnaker carrying a second one, apply modification factor for each.
2) For class normally with spinnaker carrying one or more additional headsails, apply modification factor for
3) Also note the Other penalty for other deviations not identified below.
US SAILING CODE
|D-PN||Modification Factor (MF) |
for Beaufort Range
|TR||For carrying trapezes above class allowance, per trapeze||0.981||1.000||0.988||0.981||0.963|
|US||Class normally with small jib*, sailing uni without jib||1.026||1.036||1.030||1.026||1.026|
|UL||Class normally with large jib*, sailing uni without jib||1.076||1.075||1.083||1.076||1.060|
|JS||Class normally without jib, carrying small jib*||0.975||0.965||0.971||0.975||0.975|
|JL||Class normally without jib, carrying large jib*||0.941||0.940||0.933||0.929||0.938|
|SP||Class normally without spinnaker, genoa, reacher, hooter or wire/rope luff headsail attached to a pole, carrying one or more||0.960||0.953||0.958||0.960||0.960|
|SN||Class normally with spinnaker, genoa, reacher, hooter or wire/rope luff headsail attached to a pole, not equipped with one||1.020||1.030||1.025||1.020||1.010|
|MN||For non-class legal mainsail, of same sail area or less than class legal mainsail (formerly square top adjustment)||0.995||0.990||0.990||0.995||0.995|
|ML||For non-class legal mainsail, of greater sail area* than standard main||0.980||0.969||0.975||0.980||0.985|
|JU||For larger than standard jib||0.995||0.984||0.990||0.995||1.000|
|MT||For taller mast than standard||0.995||0.990||0.990||0.995||0.995|
|BM||For wider than standard beam||0.995||1.005||1.000||0.990||0.984|
Penalties apply for underweight crews who do not add weights to meet class rules
|L1||For total crew weight less than class min. crew wt. but at least 90% of class min. crew wt.||0.991||0.990||0.991||0.996||0.999|
|L2||For total crew weight less than 90% of class min. crew wt. but at least 80% of class min. crew wt.||0.983||0.980||0.983||0.991||0.997|
|L3||For total crew weight less than 80% of class min. crew wt. but at least 70% of class min. crew wt.||0.974||0.970||0.974||0.987||0.996|
|L4||For total crew weight less than 70% of class min. crew wt. or for singlehanding a sloop
not having class min. crew weights.
Optional allowances for heavy crew weight are designedfor local fleet racing
and not recommended to be applied at divisional levels, regional levels or above
Do not add weight in order to become eligible for H1, H2 or H3 weight allowances
|H1||For total crew weight at least 110% of class min. crew wt. but less than 120% of class min. crew wt.||1.003||1.010||1.007||1.003||1.000|
|H2||For total crew weight at least 120% of class min. crew wt. but less than 130% of class min. crew wt.||1.006||1.020||1.013||1.006||1.000|
|H3||For total crew weight more than 130% of class min. crew wt.||1.010||1.030||1.020||1.010||1.000|
|Any other deviations from standard class configurations, including the addition of wings, can be assessed a penalty of at least 0.995. Multiple deviations may incur multiple penalties. Penalties may be greater than 0.995. Please identify any such modifications and penalties assigned and include with results reported to the handicap committee and Portsmouth Numbers Committee.|
|Same Sail Area:||within 5% of Calculated Approximate Sail Area|
|Greater Sail Area:||5% of larger difference in Calculated Approximate Sail Area|
|Small jibbed boats:||boats with standard jib tacked to bridal wires and hoisted to or below mast hounds|
|Large jibbed boats:||boats with foils or jibs with tack attached to the deck or from cross beam and/or head attached above mast hounds|
You and your club/fleet can help this effort by forwarding your race results annually by November 1
to US SAILING, Portsmouth Numbers Committee, P O Box 1260, Portsmouth, RI 02871,
or via email to firstname.lastname@example.org via fax to Offshore@ussailing.org.
Race data needed: Class Code, Average Wind Speed, Elapsed Times & Corrected Times. Please indicate non-standard equipment used and/or include modification code.