unserviceable

They were so clogged with dust, however, as to be almost unserviceable, and their ammunition was expended.

Think of Scotland, with its rocky seaboard of 1500 miles: only eight life-boats, and some of these 'quite unserviceable!'

A most portentous note on the chart informs us, that 'about one-half of the boats are unserviceable!'

Such a mode of constructing canoes might serve well enough for river navigation, but would be unserviceable for sea craft.

To his disappointment he found most of the rifles in unserviceable condition, covered with rust and verdigris.