Costa Concordia

[irmscher]

Thought it was an American Chris to use as a hotel or is this another one

[ASL642]

Clive Palmer - Australian billionaire is building Titanic II.

[les]

----paying for it maybe, don't think he'll be doing much building. It's unimaginable having so much money you don't know what to do with it.

[margriff]

I heard they used 65,000 tonnes of pressure to right her. Previously the biggest amount for a job like this was 2,000.
What a fantastic piece of engineering

[margriff]

I heard that they used 65,000 tonnes of pressure to right her. The highest previous to this was 2,000 tonnes to do a similar job. What a fantastic piece of salvage engineering

[margriff]

Whoops, didn't mean to do that

[lambrettalad]

Too much pressure

[margriff]

Nice one

[irmscher]

ice ice baby

[ian.mcdougall]

Mullerrr

[Matt]

It can't be pressure, tension maybe?

[margriff]

Heard the head of the operation on radio 5...that's the word he used, don't understand myself but it sounds impressive

[Matt]

Pressure needs an area to act on and should have an "area" in the units, e.g. Pounds per Square Inch

Its one of those mis-used terms

[youngcamper]

Pressure needs an area to act on and should have an "area" in the units, e.g. Pounds per Square Inch

Its one of those mis-used terms

I think it'd be force, a bit like density pressure is the same regardless of the area you're measuring it from but the total force would change.

so the total force could be 65,000 tons but the total pressure could be 65,000 tons per square inch or 0.065tons(65kg) of pressure over 1,000,000 inches

I think that's right ???

[Matt]

No, lbs is unit of mass - which takes accelleration in to account (normally due to gravity)

To be strictly correct they should have used Neutons as a unit. (1kg is approx 10N)

[estwdjhn]

German fleet were raised by being sealed and pumped full of air, I think?

Plus they were upright.

Not so. They turned several of them over underwater using lots of hand winches on floating barges before lifting them to the surface. There is a fascinating book about how it was done about http://www.amazon.co.uk/Coxs-Navy-Salva ... 1848845529 - IMHO well worth nine quid.

The safety record for the times was quite impressive too - IIRC they only lost two men out of thousands working on raising the ships, and one of them was when a land based derrick crane collapsed due to what was mostly a manufacturing fault.