The noun 'crew' is a collective noun for:
a crew of barbers
a crew of laborers
a crew of pilots
a crew of rowers
a crew of sailors
a crew of firemen or rescue workers.
The noun crew is functioning as the collective noun in 'a crew of rowers'.
The collective noun for sailors is a crew.
The collective noun for seamen is "crew" or "sailors."
The collective noun for pilots is a crew of pilots.
The collective noun 'crew' is singular, one crew. The correct verb is 'The crew prepares...'.
The standard collective noun is a crew of workmen.
The collective noun for pilots is a crew of pilots.
Collective nouns for miners are a crew or a shift.
Example sentences for the collective noun 'crew':A crew of laborers cleared the debris that blocked the road.The crew of sailors stood at attention for the captain's review.Coffee will be served to the crew of pilots soon after takeoff.A crew of firemen have blocked off the street of the fire.I'm trying out for a position on the crew of rowers.The crew of rescue workers airlifted the victims to safety.
Navy is not a collective noun. The word navy is a singular, common noun; a word for a color and a word for a military branch.A collective noun is a word used to group people or things taken together as one whole in a descriptive way, for example:a fleet of ships (fleet is the collective noun)a crew of sailors (crew is the collective noun)a rainbow of colors (rainbow is the collective noun)
The collective noun for 'followers' is a trail of followers.
Collective nouns for workmen are a crew of workmen or a gang of workmen.