  The magnetic dipole-dipole interaction does not prevent existence of
half-quantum vortices in the polar phase of superfluid He-3 which can be stable
in uniaxial anisotropic aerogel. Here we discus this exotic possibility. After
developing a phenomenological theory of phase transition from the normal to
polar superfluid state and then to axipolar superfluid state we calculate the
NMR properties of such type superfluids at the rest or under rotation filled by
an array either single quantum or half quantum vortices.
