Outside A pushed barge outside a pushed convoy, a pushed barge, may be relocated only be moved:
(a) Being coupled side-by-side to a motorized vessel or
(b) In accordance with the regulations or with the authorization of the competent authority,
(c) On short distances when a pushed convoy is being formed or broken up or
(cd) Being coupled side-by-side with vessel which has a steering device and a sufficient crew.