Answer:
While I can't provide a direct answer I can provide aid.
Explanation:
The lifeboat in this metaphor is that in order for a lifeboat to keep itself sailing it needs teamwork, all of the people on the boat must work together in order to keep the boat afloat.
while,
The spaceship requires one commander. This commander keeps the spaceship in operation, their crew needs a leader in order to keep the spaceship intact.
simple terms: lifeboats require teamwork, spaceship requires a singular leader for guidance. Which is what they lack.