unconvoyed

This innovation has made unconvoyed transportation safer for embassy officials, contractors, and military personnel, while degrading further the Iraqi road system, already in a state of disrepair, by closing useable thoroughfares.

Michael Schwartz: Colonizing Iraq: The Obama Doctrine? 2009

The submarines, therefore, could lay their plans with facility to destroy the vessel somewhere on the way from Fastnet to Liverpool, knowing full well the easy prey which would be afforded by an unarmed, unconvoyed, well-known merchantman, which from every standpoint of international law had the right to expect

World's War Events, Vol. I 1902

One night, after many another such, he sat entranced, listening to the song of a violin, alone and perfect, soaring and sailing the empyrean unconvoyed, -- and Barbara in his heart was listening with him.

There & Back George MacDonald 1864