Monitor Windvane

Monitor Windvane

Installation on Different Boats

Boats with Canoe Stern

On most yachts, the Monitor is attached with two upper mounting tubes and two lower tubes. The tubes are attached to the hull with U-shaped universal brackets which easily conform even to complex compound curves. This is especially valuable on a canoe stern since you simply rotate the tubes till the bracket is flush with the hull. No teak wedges needed. Each bracket is attached to the hull with two bolts, a total of eight 5/16" holes for the average installation. The lower tubes have telescoping end fittings that makes fore and aft alignment easy.

New U-shaped mounting brackets with smaller foot print and only two holes per bracket were introduced in the Spring of 1998, but the older L-shaped type is still available.


Boats with Outboard Rudder

We will widen the upper mounting tubes to allow for the swing of the rudder, if necessary. When longer tubes are needed we often use same side diagonal tubes which go from upper to lower mounting tubes. They go to existing bolts most of the time and no additional holes are necessary. The resulting triangulation from the diagonals makes the installation enormously strong.

Boats with Open Transom, Transom Gate or Swim Platform

These boats can sometimes present a bit of a challenge. We normally use V-style diagonals that start from the center of the hull and go to the main frame. This arrangement often leaves room to use the swim platform. The Monitor can also be removed by taking out 4 or 5 bolts. The vane is then easily stored in the lazaret.

Boats with Low Freeboard

When boats have the top of the transom at less than 40–42 inches or (1020–1070mm) from the water, we often mount the upper tubes on deck instead of on the hull. If your boat is in this category we suggest that you include a rough sketch with measurements showing deck layout with cleats, lazarette hatches, vents, etc. This will enable us to avoid these "obstructions" and make a more accurate installation drawing.

Boats with Boomkin

The ideal boomkin has room for the Monitor inside the boomkin. The arrangement of the boomkin center support strut sometimes has to be rearranged, but this it is not really a problem. The boomkin will now act as a bumper and protector of the Monitor. If there is not enough room inside the boomkin the Monitor will be attached behind the boomkin.


Monitor windvanes have been installed on many catamarans and trimarans used for cruising. The late Geoff Pack, former editor of Yachting Monthly wrote the following on the subject in his book Bluewater Countdown:

"Short-handed racing multihulls experienced many problems with their highly fluctuating speeds and therefore varying apparent wind that their vane gears used as a reference. The electronic autopilot came to their rescue. For some reason cruising multihulls got tarred with the same brush. —- the usually well loaded cruising multihull’s speed does not skitter back and forth enough to confuse a vane gear which, by and large, works just as well on a cat or tri".


Center-Cockpit Boats

Running the operating lines from the Monitor to the wheel adapter on a center-cockpit boat is not a worrisome an issue as most sailors think. With the use of good-quality low-friction blocks and well thought-out line layout, loss of sensitivity in light wind can be eliminated.

Boats with Davits

We strongly believe that an oceangoing sailing boat should not carry a dingy in davits. Eventually it will be lost in rough weather. There is also a conflict between windvanes and the davits. Since you should not sail in the ocean using the davits we encourage you to solve the dingy loading by using existing halyards and booms and placing the dingy on deck. If you insist on using davits, we recommend the removable type.

If your priorities are different we can also look at the Saye's Rig and especially the Auto-Helm, which both work very well with davits.