The word in the sentence that is a collective noun is "crew".
Collective nouns are nouns that refer to a group of people. They can be used with a singular or a plural verb depending on the view of the speaker. If the group is considered a single entity, a singular verb is used; however, if the members of that group are considered as separate individuals, a plural verb is used. In this case, "crew" is considered a single entity; therefore, a singular verb has been used. Besides "crew", other collective nouns are "army", "choir" and "jury".