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This is John Bachelor. I spoke with my colleague Charles Pellegrino about the death of Titanic.

What took her down so quickly? How many compartments were punctured by the ice?

And then the phenomenon of the open portals.

Charlie explains how she might have lived except for.

Here is the death of the Titanic, Charles Pellegrino.

There were a lot of open portholes. We did a census in 2005 and afterward after that expedition.

And it seems about 18% of the portholes in near the front of the ship were open because of overheating of the rooms.

They didn't even have fins in the rooms. Those came in later ships so people kept the portholes open at night.

Even though it was 28 degrees outside, it was better to have cold air blowing into the room than the heating people were experiencing.

They looked out based. So what did we hit?

Many people went out and wandered around and explored the ship and then headed for the lifeboats, leaving those portholes still open.

For example, in just one of the rooms owned by the publisher, Hopper, his open portholes, which we could still see when we got robots inside.

And they were still cranked open. And that alone, considering that the damage was only about 12 square feet total, about two sidewalk squares.

That alone, it is 50% to the flooding that was caused by the iceberg.

So as she went down, that flooding became two times more three and it just went up a lot of rhythmically.

Did the bridge know the portals were open?

There are indications. I witnessed accounts that one of the ship's designers, Thomas Andrews, he was trying to get doors open in rooms.

No one could find keys. They couldn't get doors open after a while. They were banging doors down and throwing them over for someone to maybe float on them.

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