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Old 04-19-2012, 05:26 AM
 
Location: Earth Wanderer, longing for the stars.
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NOVA did a special, which is repeated tonight on Why Ships Sink.

It gave opinions on cruise ships and their current design.
Ships are currently built so high that the center of gravity is high, which makes for a more comfortable voyage, but also makes the ship less stable. They cited a case in which two ships collided when one was swept sideways by the wind and no attempts from the bridge of that ship could prevent the collision.

Another major problem was that some cruise ship have a full double hull which means that there is an outside shell of a hull that may fill with water from some impact but the remaining inside hull and the entire ship remains dry and afloat. For financial reasons many cruise ships are only built with a partial double hull. This only protects from collisions to the bottom of the ship. The Carnival/Costa was hit from the side and only had a half secondary hull which was why it sunk.

The aviation industry mandates that pilots do practice time on flight simulators. This makes a reaction to a crisis rehearsed and automatic. It is an attempt to override 'reaction freeze' which can set in when facing an emergency.
The maritime industry does not mandate the crew to do time on simulators. It is strictly voluntary.
The captain of the Costa had only been a cruise ship captain for four years. Cruise captains are required to do a number of social functions as well as their more serious duties.
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Old 04-19-2012, 05:44 AM
 
Location: Jacksonville/Afghanistan
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I thought it was just cause they got holes in them.
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Old 04-19-2012, 07:38 AM
 
Location: Texas
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Quote:
Originally Posted by Budke View Post
I thought it was just cause they got holes in them.

Silly you. It's not the holes which cause them to sink...it's the water which comes in those holes!
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Old 04-19-2012, 07:46 AM
 
Location: Colorado
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I watched that last night. Scared the bejesus out of me! Now I know why I will never take a cruise, ever. The story of the musician who basically saved an entire shipload of passengers after the crew fled and the captain hid under the staircase was extraordinary. I hope those cowardly $#!*s got serious jail time.
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Old 04-19-2012, 04:40 PM
 
Location: Earth Wanderer, longing for the stars.
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Quote:
Originally Posted by chilaili View Post
I watched that last night. Scared the bejesus out of me! Now I know why I will never take a cruise, ever. The story of the musician who basically saved an entire shipload of passengers after the crew fled and the captain hid under the staircase was extraordinary. I hope those cowardly $#!*s got serious jail time.
Yup. That same entertainer rescued people from another cruise ship that caught fire.

I will go on cruises. You can look at the ships online and see how high up they are built. Ocean liners are supposed to be more stable than cruise ships. I will cross the ocean on Cunard. I will go on other cruises by smaller ships without all those tiers on top. I guess a travel agent could find out if a particular ship had a full double hull.

The thing that is troubling, you really don't know how stable the captain and crew are, do you? You have no idea of their training.
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Old 04-21-2012, 08:03 AM
 
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I go on cruises a lot. But I prefer the smaller, higher end, ships with fewer passengers. On my last cruise we rescued three fisherman who had been adrift, 70 miles from the nearest land for a couple of weeks .....

Rescued Samoan fishermen well despite two weeks lost at sea

TALANEI.COM :: LOCAL NEWS :: DETAILS (http://www.talanei.com/viewNews.php?storyID=6337 - broken link)

But the good news doesn't generally make the headlines.
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Old 04-27-2012, 02:02 PM
 
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A couple of reasons:

1) They hit something: Titanic, Andrea Doria and Costa Concordia
2) There is a defect in the design: The Estonia was both a ship and a car ferry and, in heavy seas, took on water through its car loading door
3) A gigantic rogue wave: while the grand ocean liners could take the hit, I believe a smaller one could be capsized
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Old 04-27-2012, 04:34 PM
 
Location: Victoria TX
42,663 posts, read 74,241,442 times
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Quote:
Originally Posted by stillkit View Post
Silly you. It's not the holes which cause them to sink...it's the water which comes in those holes!
Actually, it is the air that is forced out by the entering water, which defeats the buoyancy. That air leaves easily, because the tops of the holds are not sealed. Fatal design flaw.
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Old 04-28-2012, 07:07 AM
 
Location: Victoria TX
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Don't forget loose lips.
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Old 04-28-2012, 04:19 PM
 
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On a side note i've seen many documentaries on sunken ships particularly wooden ones,as wood floats i've wondered how a wooden ship can totaly sink,wouldnt it have a point at which it would just float and not sink any more.
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