Answer: scows

AnswerCrossword Clue
SCOWSThey're full of garbage
SCOWSHarbor craft
SCOWSHarbor boats
SCOWSLighters
SCOWSLighters' kin
SCOWSLarge barges
SCOWSSome coal carriers
SCOWSTugs' tows
SCOWSBarges
SCOWSPunts, e.g.
SCOWSJunk vehicles
SCOWSLarge boats.
SCOWSFlat-bottom boats
SCOWSFlat-bottomed harbor boats
SCOWSJunk transporters
SCOWSTrash boats
SCOWSGarbage-carrying boats
SCOWSGarbage transporters
scowsto transport by scow
scowsany of various vessels having a flat-bottomed rectangular hull with sloping ends, built in various sizes with or without means of propulsion, as barges, punts, rowboats, or sailboats
scowsbarge carrying bulk material in an open hold
scowsold or clumsy boat; hulk; tub
SCOWSTrash transporters
SCOWSRefuse transportation
SCOWSPunts
SCOWSGarbage boats
SCOWSBarges and such
SCOWSTugs' burdens
SCOWSGarbage haulers
SCOWSHarbor haulers
SCOWSThey have flat bottoms
SCOWSGarbage carriers
SCOWSGarbage barges
SCOWSFlat-bottomed boats
SCOWSFlat-bottomed vessels
SCOWSGarbage-hauling boats
SCOWSTrash haulers
SCOWSTubs
SCOWSFreight haulers
SCOWSClumsy craft