The double-ended 8:1 vang allows adjustment from either side of the boat.
A 2:1 gnav (which pushes boom down instead of pulling it down like
a vang), which makes it easier for the crew to move under the boom.
We at Mauri Pro Sailing are fully committed to be your 49er Gnav specialist not only providing the sailing community with a comprehensive and easy to use web site but with all the appropriate technical information that you might need to select your sailboat hardware and equipment. If you need any assistance selecting the appropriate 49er Gnav
please contact us. Our crew is ready to help!