Answer:
What ship has no captain but two mates?
An utensil used for bread. Also a paper cutter. Used by a thug to take a life, Or wielded by the tamest wife, When used to spread the butter.
In many hallways you would stand, if not with this in hand.
I'm the son of water but when I return to water I die. Who am I?
A big shiny black car nobody wants to be a passenger in.
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.