1635 L. Foxe sig. Xv That no man shall..make any doubt thereof, eyther..at his Messe or to his Watch-mate.
1840 R. H. Dana xvi. 150 About midnight, we were waked up by our two watch-mates.
1898 F. T. Bullen xiv. 162 All my watchmates were..waiting to be taken on board again.