Harken Furling System

[mserra]

Anybody knows the difference between MK III Unit 1 and Unit 2 ?
I have a J/109 bought in Netherlands from 2007 built in France. I am trying to find if the boat has Unit 1 or 2 installed..

[Vento Solare]

The J/109 rigging specifications has Unit 1 which is installed on my US built boat.

[30101]

What type of replacement or upgraded furlers are permitted under the class rules? I've seen some boats with newer, more compact Harken furling units. My original unit still works but I would think the newer models function more smoothly for smaller people pulling the furling line and freeing up more space in the pulpit is always welcome.

[Vento Solare]

The Harken Mark IV Unit 1 is approved by class rules and somewhat more compact than the Mark III it replaces.