Use "flatboats" in a sentence

1. Bargemen was a term used interchangeably with "keelboatmen," "bargers," and "keelers." It applied to men who operated riverboats that traveled upstream (as distinct from flatboats).

2. Bargemen was a term used interchangeably with "keelboatmen," "bargers," and "keelers." It applied to men who operated riverboats that traveled upstream (as distinct from flatboats)