Answer:
A lack of preparation and adequate safety measures caused chaos following the collision.
No one expected a boat like the Titanic to sink, due to this many including the crew members had no idea how to even react to something like this happening as many were panicking or in far of what to do.
"The boats were swung out—slowly, for the deckhands were late in reaching their stations; there had been no boat drill, and many of the crew did not know to what boats they were assigned."