It is designed for cruising and racing yachts up to 20m.
The vane and arms are made of super tough, glass-filled Nylon 12, for improved rigidity, durability, and UV resistance over similar looking polycarbonate versions on the market. They are all but indestructible.
The precision balanced vane arm and Hawk's "V" jewel bearing surface gives instant response to shifts and gusts with minimal inertia.
The reference arms can be preset at 55, 60 or 65 degrees or any angle you prefer, and can be used for either upwind or downwind angles.
The 5mm aluminium support rod is strong enough to take normal wear and tear, but can be bent straight should it be knocked while the mast is being stepped or unstepped.

Suitable for cruising and racing yachts to 65 ft
Easily removed from mounting bracket with one screw
Mast bracket can be mounted vertically or horizontally
Multiple mounting options (all in the box) for most existing mounts
Can be bolted to any pre-drilled 8mm holes in the mast head crane using the supplied adaptor with nut and bolt
Vane arm length: 15.0" (38cm)
Overall height: 11.4" (29cm)
Overall weight: 2.5 oz (70gm)
"V" jewel low friction bearing
Counter weighted balanced vane arm
Underside of vane has white reflective patches, and underside of reference arms have red reflective patches for night use