A boat cradle has two pair of channels comprised of two lower channels supporting
two upper channels. The lower channel members are each pivotally fixed to its own
upright; the upper channels support a plastic pad that rotates to match the bottom
and the inclination of the boat. One of the inner ends of the lower channels mounts
a transfer block, and the other mounts a transfer plate. The lower channels are
kept generally to a horizontal position by a leaf spring; one end bearing against
the bottom of the web of the lower channels and the other end fixed to the upright
post. A cut out on the upright post limits the lower pair of supports beyond the
horizontal in an upward direction.