Please identify the set or sets, grey 6 x 6 circle and dark red and white curve with vent
The build on the left is from 60002 - Fire Truck - it's the turntable/mount for the ladder:


Based on containing the "Plate 6x6 round", and "Bottom W.Turntable 4x4"

The build on the right is from 60147 - Fishing Boat - it's one of the engines:


It's currently the only set with "Plate W. Bows 2X3½" in New Dark Red.