Date: 11/02/2014 13:32:28
From: CrazyNeutrino
ID: 486535
Subject: Do cruise ships have underwater sensors

Doomed Costa Concordia cruised close to Giglio once before
http://www.gazzettadelsud.it/news/english/79417/Doomed-Costa-Concordia-cruised-close-to-Giglio-once-before.html

Court told that ships permitted to sail close if at slow speeds

the ships was traveling at 16 knots, which isnt slow, what if the ship was moving slow at say 2 knots, how different would it be?

Do cruise ships have underwater sensors?

What sort of sensors could they have, would they be effective?

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Date: 11/02/2014 13:34:19
From: Dropbear
ID: 486537
Subject: re: Do cruise ships have underwater sensors

they have very accurate systems for determining their position and also can maneuver in very very confined spaces..

I don’t know if they have depth sounders, but really they shouldn’t need them

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Date: 11/02/2014 13:37:51
From: Tamb
ID: 486541
Subject: re: Do cruise ships have underwater sensors

Dropbear said:


they have very accurate systems for determining their position and also can maneuver in very very confined spaces..

I don’t know if they have depth sounders, but really they shouldn’t need them


16 knots is way too fast that close to shore & rocks. It’s near enough to 30kph.

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Date: 11/02/2014 13:39:16
From: Bubblecar
ID: 486543
Subject: re: Do cruise ships have underwater sensors

Pretty sure they’d have sonar, but they might not have been paying any attention to it.

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Date: 11/02/2014 13:40:35
From: Bubblecar
ID: 486545
Subject: re: Do cruise ships have underwater sensors

Here you go:

Depth sonar device on Costa Concordia ‘was switched off’ when doomed cruise liner struck rock and capsized, killing 32 people

http://www.dailymail.co.uk/news/article-2218628/Costa-Concordia-Depth-sonar-device-switched-cruise-liner-struck-rock-capsized-killing-32.html

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Date: 11/02/2014 13:55:43
From: Stealth
ID: 486550
Subject: re: Do cruise ships have underwater sensors

If large ships go too slow they lose steerage.

Also ships steer from the rear, so to turn right you need to push the stern out to the left. This means if you have rocks close by on the left to steer away you need to push the stern closer to the rocks. A bit like driving a car in reverse gear.

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Date: 11/02/2014 14:00:40
From: Tamb
ID: 486551
Subject: re: Do cruise ships have underwater sensors

Stealth said:


If large ships go too slow they lose steerage.

Also ships steer from the rear, so to turn right you need to push the stern out to the left. This means if you have rocks close by on the left to steer away you need to push the stern closer to the rocks. A bit like driving a car in reverse gear.


I think the Costa had bow & stern thrusters.

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Date: 11/02/2014 14:03:31
From: Dropbear
ID: 486552
Subject: re: Do cruise ships have underwater sensors

yeh modern cruise liners are very maneuverable and usually employ bow thrusters, or even turnable azipod steering systems

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Date: 11/02/2014 14:03:58
From: CrazyNeutrino
ID: 486553
Subject: re: Do cruise ships have underwater sensors

Bubblecar said:


Here you go:

Depth sonar device on Costa Concordia ‘was switched off’ when doomed cruise liner struck rock and capsized, killing 32 people

http://www.dailymail.co.uk/news/article-2218628/Costa-Concordia-Depth-sonar-device-switched-cruise-liner-struck-rock-capsized-killing-32.html

Thanks for that, I wonder if turning of the Depth sonar has anything to do with the following -

Meanwhile, Massimiliano Gabrielli, a lawyer for plaintiffs in the case said during a break in the hearings that the so-called “bow” by captains when they sailed very close to a shore had become a habit or tradition and some even competed to see who could sail closest.

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Date: 11/02/2014 14:05:56
From: Tamb
ID: 486554
Subject: re: Do cruise ships have underwater sensors

CrazyNeutrino said:


Bubblecar said:

Here you go:

Depth sonar device on Costa Concordia ‘was switched off’ when doomed cruise liner struck rock and capsized, killing 32 people

http://www.dailymail.co.uk/news/article-2218628/Costa-Concordia-Depth-sonar-device-switched-cruise-liner-struck-rock-capsized-killing-32.html

Thanks for that, I wonder if turning of the Depth sonar has anything to do with the following -

Meanwhile, Massimiliano Gabrielli, a lawyer for plaintiffs in the case said during a break in the hearings that the so-called “bow” by captains when they sailed very close to a shore had become a habit or tradition and some even competed to see who could sail closest.

More balls than brains. :(

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Date: 11/02/2014 14:18:11
From: CrazyNeutrino
ID: 486559
Subject: re: Do cruise ships have underwater sensors

Tamb said:


CrazyNeutrino said:

Bubblecar said:

Here you go:

Depth sonar device on Costa Concordia ‘was switched off’ when doomed cruise liner struck rock and capsized, killing 32 people

http://www.dailymail.co.uk/news/article-2218628/Costa-Concordia-Depth-sonar-device-switched-cruise-liner-struck-rock-capsized-killing-32.html

Thanks for that, I wonder if turning of the Depth sonar has anything to do with the following -

Meanwhile, Massimiliano Gabrielli, a lawyer for plaintiffs in the case said during a break in the hearings that the so-called “bow” by captains when they sailed very close to a shore had become a habit or tradition and some even competed to see who could sail closest.

More balls than brains. :(

seems he is worried about his

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Date: 11/02/2014 15:09:10
From: CrazyNeutrino
ID: 486567
Subject: re: Do cruise ships have underwater sensors

so cruising at 16 knots a few meters from rocks with the depth sonar turned off

hmmm

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