Without the shield, Skylab and its contents would have become unusable.

Though repaired over time, "due to wear and tear" they were becoming unusable.

The fabric of the church deteriorated and by the winter of 1718 it had become unusable.

Kentucky had a very low freeboard, leading to her guns becoming unusable in bad weather.

The barrels could only handle five or six shots apiece before becoming damaged and unusable.

However, if the bridge was torn down or became unusable there would be a 63 mile gap between river crossings.

The longer we leave the track laid south of the city, the more risk there is of it becoming unusable.

Items that have degraded heavily become unusable until they are repaired.

But the old equipment from the attic has become unusable.

By 1851 the building had become unusable and a Methodist church was used for a courtroom until 1875 when an election authorized the present courthouse.