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Calculated Genoa Sheet Loadings
Sail	Area	Load (lbs.) for Apparent Wind (Knots)
Sail	Square Feet	5	10	15	20	25	30	35	40	45	50	55	60
Furling Genoa	480	52	207	465	827	1,292	1,860	2,532	3,307	4,186	5,168	6,253	7,441
Genoa Part Furled (100%)	385	41	166	373	664	1,037	1,493	2,033	2,655	3,360	4,148	5,020	5,974
Working Staysail	160	17	69	155	276	431	621	845	1,103	1,396	1,724	2,086	2,483
Storm Staysail	115	12	50	112	198	310	446	607	793	1,004	1,239	1,499	1,784
Asym. Cr. Spinnaker	1,295	140	558	1,256	2,233	3,488	5,023	6,837	8,930	11,302	13,954	16,884	20,093
Genoa Sheet Load (lbs.) = SA * V*2 0.00431
Formula Source: Harken (http://www.harken.com/blocks/loads.pdf)

Mainsail Dimensions	100%	75%	50%	28%
P. Foot length of Main in feet	45.3	39.3	32.1	24.0
E. Luff Length of Main in feet	14.6	12.6	10.3	7.7
X. Distance from Aft end of boom to mainsheet attachment point in feet	0.0	-2.0	-4.3	-6.9
R: Traveller Block Ratio	3:1

Calculated Main Sheet Loadings Including Traveller Purchase
Sail	Area as % of Main	Load (lbs.) for Apparent Wind (Knots)
Sail	Area as % of Main	5	10	15	20	25	30	35	40	45	50	55	60
Mainsail	100%	23	91	204	362	566	815	1,109	1,448	1,833	2,263	2,738	3,258
Mainsail 1st Reef	75%	15	59	132	235	367	529	720	941	1,190	1,470	1,778	2,116
Mainsail 2nd Reef	50%	8	32	72	128	201	289	393	514	650	803	972	1,156
Storm Trysail / Third Reef	28%	3.4	13.4	30.2	53.6	83.8	120.6	164.2	214	271	335	405	482
Main Sheet Load (lbs) = E*2 P*2 0.00431 * V2 /(sqrt(P2 + E*2) (E - X))
Formula Source: Harken (http://www.harken.com/blocks/loads.pdf)
This formula is not so well accepted as the Genoa Sheet Loadings

Control Line Loadings
	% of Main-sheet loads	Max Load (lbs.) for Apparent Wind (Knots)
	% of Main-sheet loads	5	10	15	20	25	30	35	40	45	50	55	60
Based on Main Sheet Loadings:		No Reef			First Reef			Second Reef			Trysail
Outhaul/Cunningham	50%	11	45	102	118	184	265	197	257	325	168	203	241