Harken: Winch Use Chart

winch use chart

This winch use chart will give good results, but it requires that you know the exact dimensions for your boat. If you do not know your exact dimensions, use the graphs below for average dimensions for your size and type of boat, but be sure to confirm the dimensions before ordering a winch. Rig dimensions have precise definitions under the racing rules; those shown are general descriptions only. Whenever there is a question regarding winch selection, please contact Harken.

Technical Service email
262-691-3320 phone 7:30-4:30 CST


Definitions

I	Height of the foretriangle measured from the top of the highest sheave to the sheerline

I₂	Height of staysail halyard above deck

J	Base of the foretriangle measured from the front of the mast to the intersection of the forestay and deck

J₂	Base of staysail triangle

P	Luff length of the mainsail

E	Foot length of the mainsail


	GENOA				MAINSAIL

WINCH SIZE	SHEET		HALYARD		END-BOOM MAINSHEET		HALYARD		REEF

	Max sail area 100% foretriangle (I x J x .5)		Max I		4:1 Sheet max sail area (P x E x .5)		Max P		Max P

	ft²	m²	ft	m	ft²	m²	ft	m	ft	m

6	75	7	25	7.6	-	-	25	7.6	34	10.4

8	115	10.5	36	11	150	14	32	9.8	40	12.2

16	155	14.5	42	12.8	230	21	38	11.6	46	14

32	225	21	48	14.6	335	30	43	13.1	53	16.2

40	270	25	54	16.5	410	38	49	14.9	57	17.4

42	310	29	59	18	500	46.5	54	16.5	63	19.2

44	340	31.5	64	19.5	560	52	59	18	68	20.7

46	365	34	69	21	625	58	64	19.5	73	22.2

48	390	36	73	22.2	700	65	68	20.7	78	23.8

53	435	40	77	23.5	765	72	73	22.2	85	25.9

56	525	49	82	25	850	79	80	24.4	92	28

64	590	55	86	26.2	1000	93	85	25.9	97	29.6

66	695	64.5	92	28	1200	111	94	28.7	106	32.3

74	950	88	100	30.5	1350	125	102	31.1	-	-


	STAYSAIL		SPINNAKER

WINCH SIZE	HALYARD		SHEET		HALYARD		TOPPING LIFT/ FOREGUY

	Max I₂		Max sail area (I x J x 1.8)		Max I		Max I

	ft	m	ft²	m²	ft	m	ft	m

6	25	7.6	500	46	25	7.6	35	10.7

8	37	11.6	800	74	36	10.9	44	13.4

16	42	12.8	975	91	42	12.8	50	15.2

32	48	14.6	1135	105	48	14.6	56	17

40	54	16.5	1240	115	54	16.5	61	18.6

42	59	18	1315	122	59	18	66	20.1

44	64	19.5	1400	130	64	19.5	73	22.2

46	69	21	1530	142	68	20.7	78	23.8

48	73	22.2	1750	162	74	22.5	82	25

53	77	23.5	1960	182	79	24	90	27.4

56	82	25	2200	204	85	25.9	98	29.9

64	86	26.2	3000	279	91	27.7	108	33

66	-	-	3500	325	96	29.2	-	-

74	-	-	-	-	105	32	-	-