Sentence: There was, of course, another alternative, and that was the supposition that they had stolen the Luciferthe fallen Angel, as Natasha had now renamed herfor purposes of piracy and private revenge but that was negatived by the fact that Tamboff knew that he only had a certain supply of motive power which he could not renew, and which, once exhausted, left his airship as useless as a steamer without coal.
Combination: a steamer without coal (root: steamer, modifier: coal)
Property: useless
Property type: emergent