use Ballast in a sentence
[noun] Any heavy material that is carried to stabilize a ship or airship, balloon;
The balloon had been filled and the basket attached. I fastened on the extra ballast and loaded three batches of mail.
She needed speed, more speed, and the ballast in the car was too heavy to let her fly down the highway.
Ground crew members load four 25-pound bags of ballast.
I only wonder what ballast will balance all that bloody sail.
Wooden sailing ships had used rocks, cargo, and other dry ballast to stay steady.
We had cut the excess ballast that was slowly pulling us down.
The captain finally decided not pump out the ballast tanks to gain speed.