Harken: Midrange Use Chart

MIDRANGE USE CHART

Hardware specifications are for monohulls of moderate dispacement.

Note: Multihulls and heavy displacement monohulls should reduce the maximum sail areas shown by as much as 25%. Please contact Harken if you have questions about hardware suitability.

Technical Service:
technicalservice@harken.com
262-691-3320 phone 7:30-4:30 CST

MAINSHEET	MAST BASE
GENOA	RUNNING BACK STAY
SPINNAKER	VANG

Mainsheet

		Maximum mainsail area
		ft²	m²

End-Boom System	Single Attachment	500	46

	Multiple Attachment	540	50

Mid-Boom System	Single Attachment	425	39

	Multiple Attachment	500	46

*Multiple attachment assumes more than one load-carrying shackle on both the boom and traveler car or deck.

Genoa

		Maximum mainsail area
		ft²	m²

Turning Blocks		Maximum 100% foretriangle sail area

	180° Deflection	150**	14**

Turning Blocks		Maximum 100% foretriangle sail area

	90° Deflection	215**	20**

**Assumes maximum apparent wind speed of 35 knots

Spinnaker

		Maximum spinnacker area
		Standard blocks		High-load blocks
		ft²	m²	ft²	m²

Sheet Blocks	Plain	1100	100	1300	120

	Ratchet	900	83	-	-

Afterguy Blocks	Mounted Amidships	1100***	100***	1250***	115***

	Mounted on Transom	900	83	1000	93

		Maximum "I" dimension

Masthead Halyard Block		48 ft	14.6 m	53 ft	16 m

***Assumes maximum deflection of 45°

Mast Base

	Maximum "P" dimension
	Standard blocks		High-load blocks
	ft	m	ft	m

Main Halyard Lead Block	48	14.6	52	15.8

	Maximum "I" dimension

Genoa Halyard Lead Block	46	14	50	15.3

	Maximum "I" dimension

Spinnaker Halyard Lead Block	48	14.6	53	16

Running Backstay

		Maximum runner wire breaking strength
		Standard blocks		High-load blocks
		lb	kg	lb	kg

Flying Block	2:1	3600	1633	4600	2086

Afterguy Blocks	1:1	2200	998	2800	1270

	2:1 Becket	3600	1633	3600	1633

	2:1 Single	4500	2040	5000	2268

Vang

	Maximum mainsail area
	ft²	m²

Fiddle Blocks	400	37

Triple Blocks	450	42