i'm in a much less forgiving position with Carnival.
They broke one of the prime rules - and laws - of the sea.
as others have noted - they should have spotted that vessel in distress from their bridge. think about the height of the bridge above the water - they have a huge advantage. as i said earlier, their seamanship is either in serious question, or there is some kind of "secret protocol" going on where the captains have been told not to stop for "suspicious" boats.

it may be true that it would take time to turn a cruise liner.
but surely they could figure out some way to get a few supplies (blankets, water, rations) to another vessel in distress.

or = as someone said - at least a radio call reporting a problem. but i would think that the laws of the sea would require them to perhaps do more than just make a call. if they are the closest vessel, and seaworthy themselves, it seems like they should be required to respond.

Pete2