Harken MKIV Ocean Unit 3 Without Toggle 7513.10New ItemView all Harken Products in Furling

Binnacle.com #:  H7513.10
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Harken MKIV Ocean Unit 3 Without Toggle 7513.10

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Binnacle Gift Cards exempt. Website orders only. One Free item per customer/household. Ends Midnight Friday Dec. 2
For cruising sailors, MKIV Ocean furling systems offer reliable sail control like MKIV for racers but with features specifically configured for the way they sail - and at the right price.
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Binnacle.com:   #H7513.10
Brand:  Harken
MFG Part#:   7513.10
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Harken MKIV Ocean Unit 3 Without Toggle - 7513.10

For cruising sailors, MKIV Ocean furling systems offer reliable sail control like MKIV for racers but with features specifically configured for the way they sail – and at the right price.

They are made of hardcoat-anodized aluminum, UV-stabilized for durability and includes multiple rows of Torlon® ball bearings to minimize friction and make pulling the furling line a less physical experience. The bearings require no lubrication for easy maintenance and are designed for easy installation.


  • Typical boat length: 45 - 80' (13.7 - 24.4 m)
  • Standard forestay length: 74'-8" (22.76 m)
  • Maximum forestay length: 88'-8" (27.03 m)
  • Wire size: 7/16", 1/2", 9/16", 5/8" (11, 12, 14, 16 mm) or max Rod size -48 (14.3 mm)
  • Maximum clevis pin size: 1-1/8" (28.6 mm)
  • Luff Tape Size -6 (5 mm or 6/32")
  • Toggle assembly required for installation not included
  • Multiple rows of Torlon ball bearings in high-load areas to minimize friction
  • Stacked bearing races evenly distribute radial and thrust loads; drum and halyard swivel turn freely under load
  • Foils rotate around headstay so headstay load is isolated from the furling unit for easy furling
  • Large inner spool diameter increases mechanical advantage for powerful reefing and furling
The major differences between the MKIV Ocean and the original MKIV is that the "Ocean" does not have independent halyard and tack swivels, and that it uses single-groove, round foils instead of double-groove, aerodynamic foils found on the original MKIV.

The MKIV and the MKIV Ocean share the same toggle assemblies needed for installation.

  Harken MKIV Ocean Unit 3 Installation Manual
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      ON, QC, NL: 2- 4 business days
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Very Remote areas are exempt from Free Shipping offer. These are typically remote northern areas. Nunavut as well as many parts of the Yukon and NWT are exempt from free shipping

This item has a shipping surcharge of CAD$40.00
This amount will be added to the shipping charges listed above.
Money Back Guarantee
Guarantee You may return your purchase to us (with a return authorization number - use this form) within 30 days and we will refund the purchase price of the product. During the Holiday season, gifts purchased starting Nov 15th have an extended return period up to Jan 5th. Items which are cut to order (rope, wire etc), software, chart cards and printed materials (paper charts, books) are not returnable.

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