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Questions tagged [ships]

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How to find Longtitudinal Centre of Gravity for Ship Cargo

I did a Civil Engineering course some years ago and from my textbook I had a question on a ship. I found that a very interesting question, but unfortunately I haven't been able to find a solution to ...
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80 views

How to find Ship Transverse Metacentic Height

I did a Civil Engineering course some years ago and from my textbook I had this question. I found that a very interesting question, but unfortunately I haven't been able to find a solution to this. I ...
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2answers
109 views

Why not build container ships from plastic?

This may sound crazy but bear with me. I was thinking about why cargo ships are built from such heavy material as steel, while smaller boats are often made of plastics. I know cargo ships carry a lot ...
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26 views

Regarding the ITTC Guidelines for Ship CFD applications

I was reading through the ITTC – Recommended Procedures and Guidelines - Practical Guidelines for Ship CFD Applications (https://ittc.info/media/4196/75-03-02-03.pdf) document and this little thing ...
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1answer
158 views

Why don't modern warships still use cannons?

This question is about a technical aspect of naval warfare, and I think that this site is the closest fit. History would have been my next guess. In the TV show “The Last Ship” the protagonists have ...
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3answers
190 views

Why are aircraft carriers so expensive to build? [closed]

USS Nimitz costs $4.5bn. The allure of the Seas costs $1.2bn. Why is the difference so huge?
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2answers
443 views

Thrust generated by a ship

While reading about airplane engines on the internet, it is common to find figures of their thrust, in kilo Newton. However, in the case of ships and naval vessels, when talking about the engine, the ...
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94 views

How does a cable-laying ship retrieve a partly-laid cable?

I was reading an article in the press this week about a project to lay an undersea cable across the Tasman Sea. The ship had had to return to port for repairs and return to complete the job later. ...
6
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1answer
787 views

What kind of ship is this?

I've recently been on Rügen and I have seen this: Does anybody have an idea what this is? (To give Google a chance: A ship with four "towers" made out of steel on it. They looks a bit like high-...
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1answer
460 views

How to design a reinforced concrete ship keel?

I am building a small ship (or very large sailboat) that will have a concrete ballast at the base of the keel. I am looking to increase the weight of the concrete (lb/ft3), but I also want to maximize ...
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4k views

Why would you launch a large ship by dropping it sideways?

I'm referring to the process shown in this video: https://youtu.be/Quyr5R1Rbfw?t=20 Or this image from Wikipedia: In it, a large warship is launched into the water by essentially dropping it ...