I was on my boat in on Lake Champlain floating in the middle of Shelburne Bay. I looked up and saw the unknown object slowly flying across the sky. I called the attention of my sister and father who joined me in observing the object. I observed it drop about 3 or 4 unknown orbs which fell to the ground out of sight from where we were. The object then hovered in the same spot for about 20 minutes before it disappeared. I recall the object being white and the orbs it dropped also being white. However my sister recalls the object and the orbs being black. My father thought it was a blimp and was quick to brush off the thought of a UFO. We saw the unknown craft again hovering over a spot closer to us when we traveled North into Burlington Bay. The craft quickly vanished again after that.