  This paper is a continuation of our previous paper, Co-Seifert fibrations of
compact flat orbifolds, in which we developed the theory for classifying
geometric fibrations of compact, connected, flat $n$-orbifolds, over a
1-orbifold, up to affine equivalence. In this paper, we apply our theory to
classify all the geometric fibrations of compact, connected, flat
$3$-orbifolds, over a 1-orbifold, up to affine equivalence.
