Velocity field of the H i disk of PKS B1718–649. The position angle and inclination of the minor axis of the field varies with the radius, suggesting a warped structure of the disk in the inner regions. The color scale ranges between 4140kms^-1and 4420kms^-1, showing the systemic velocity of the galaxy (4274kms^-1) in green. The unresolved continuum radio source is marked in black.