water-ballast tank

An instrument showed the water-ballast tanks filling to capacity now.

The boat was fitted with two sliding or drop-keels and two water-ballast tanks.

Not for long did the young inventor endeavor to break his way out of the water-ballast tank by striking the heavy sides of it.

But other problems, such as a torn mainsail on one boat and a leaky water-ballast tank on another, were relatively minor.

To combat such a dire capsize circumstance, he said Club Med is equipped with substantial water-ballast tanks in each bow.

As described in an article in American Heritage magazine in 1958, the Hunley had water-ballast tanks for use in raising and lowering the boat.