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Things ChengKP75 hasn't taught us yet


SadieN
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Found this video about how to build a cruise ship on John Heald's fb page.

 

How to Build Everything: A Cruise Ship

 

Includes video of places we don't see on the extensive behind the scenes ship tours.

 

 

http://carnival-news.com/2016/06/27/carnival-miracle-featured-in-science-channels-new-series-how-to-buildeverything/

 

Thank you ChengKP75 for helping us, in layman's terms, the inner workings of cruise ships.

 

 

Sent from my iPhone using Forums mobile app

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You're very welcome. Unfortunately, I can't view the video, our narrow bandwidth internet on the ship doesn't load videos real well.

 

Folks are having a good time over on the HAL forum with a thread one member started for me and other mariners here on CC to answer questions about cruise ships and maritime matters in general. If anyone wants to continue that here on a more general forum, I'll be happy to oblige, as long as the job that pays the mortgage doesn't interfere with my real job of answering questions here on CC. :D

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Okay, I'll bite

Nevada has the Nevada Gaming Commission to oversee and regulate gaming in the state of Nevada.

 

Who does the equivilant on board cruise ships?

When the RNG chips are placed into the slots, who determines the payout percentage?

 

BTW, what is that percentage overall?

Edited by klfrodo
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Okay, I'll bite

Nevada has the Nevada Gaming Commission to oversee and regulate gaming in the state of Nevada.

 

Who does the equivilant on board cruise ships?

When the RNG chips are placed into the slots, who determines the payout percentage?

 

BTW, what is that percentage overall?

 

To be honest, I have no idea, since gambling and casinos have no interest for me. However, I did a little looking, and for the most part the industry is self-regulated as regards casinos, as you would expect, unless a particular flag state has gaming laws. CLIA, the industry group, has set standards that all machines meet the Nevada Gaming Control Board's standards. All other standards for shipboard casinos are by the International Council of Cruise Lines. So, barring any gaming laws from Panama or the Bahamas, as flag states, it is pretty much an internal matter.

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:)

You're very welcome. Unfortunately, I can't view the video, our narrow bandwidth internet on the ship doesn't load videos real well.

 

Folks are having a good time over on the HAL forum with a thread one member started for me and other mariners here on CC to answer questions about cruise ships and maritime matters in general. If anyone wants to continue that here on a more general forum, I'll be happy to oblige, as long as the job that pays the mortgage doesn't interfere with my real job of answering questions here on CC. :D

 

Perhaps CC should just start an Ask Cheng board? :D

 

Thanks as always, chengkp75!

 

Can you give us a link to that HAL thread?

 

And also do post when you get your own "Ask Cheng" board :)

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Regarding the link provided by the OP, as a side comment, interesting how much the Carnival Miracle resembles RCI's Quantum class and Celebrity's Solstice class ships - two very popular and successful competitive ship classes Just an observation.

 

The show wasn't too technical, nor accurate. (Saying the shipped actually weighed over 200,000 tons.)

 

Also a note that the blue "azmithing" propeller were "z-drives" by Thrustmaster, used for smaller boats (like tugs.). These systems are mechanically connected tthe the diesel engine inside the hull.... Azipods, or or other podded propulsion systems, have an electric motor outside the hull in the pod.

 

(The animation of the RCI ship showed this.)

 

Aloha,

 

John

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On a behind the stage tour on one of the ships, maybe RCCL, going through the hallway behind the stage, we came upon a station which has something to do with an emergency anchor drop? There was a big fire ax on the wall and supposedly it was to chop away the emergency link to drop the anchor.

 

Was this for real? Does a crew member man this station when in a channel or docking just in case?

Edited by cruzincurt
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On a behind the stage tour on one of the ships, maybe RCCL, going through the hallway behind the stage, we came upon a station which has something to do with an emergency anchor drop? There was a big fire ax on the wall and supposedly it was to chop away the emergency link to drop the anchor.

 

Was this for real? Does a crew member man this station when in a channel or docking just in case?

 

That's not quite what it's for, but you're not the first one to tell this tale on CC. The "bitter end" of the anchor chain (the end of the chain opposite the anchor) is fastened to the ship by a detachable pin. I don't think it was a fire axe, more of a sledgehammer, so that if the ship is anchored and the windlass to raise it fails, they can slack off the brake, allow all the chain to run out, and knock the pin loose to let the chain free, and the ship can move.

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That's not quite what it's for, but you're not the first one to tell this tale on CC. The "bitter end" of the anchor chain (the end of the chain opposite the anchor) is fastened to the ship by a detachable pin. I don't think it was a fire axe, more of a sledgehammer, so that if the ship is anchored and the windlass to raise it fails, they can slack off the brake, allow all the chain to run out, and knock the pin loose to let the chain free, and the ship can move.

 

OK I get it now, it is the simple, last ditch effort to cut the anchor loose if they can't raise it. Thanks for the clarification. It was unexpected on my part on a billion dollar cruise ship to see something so simple as a big red sledge hammer hanging on the wall with a big "HIT HERE" sign.

Edited by cruzincurt
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We'll see what Mr. Cheng replies but from what I remember when I owned a boat (yes, smaller than a cruise ship but seems the principle would be the same) it is not just the weight of the anchor and chain (some chain lays along the bottom of the sea) but also the flukes of the anchor dig into the bottom making it much more difficult to pull out.

 

Some chain lays on the bottom or at a shallower angle to make it drag the anchor in a horizontal, or near horizontal, manner which helps to make the flukes dig in and grab more. To raise an anchor it is rather easy if the vessel is situated almost directly over it allowing it to be pulled up in an almost vertical fashion, releasing the flukes from the bottom.

 

How'd I do Mr. Cheng? Am I even a little close?

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OK I get it now, it is the simple, last ditch effort to cut the anchor loose if they can't raise it. Thanks for the clarification. It was unexpected on my part on a billion dollar cruise ship to see something so simple as a big red sledge hammer hanging on the wall with a big "HIT HERE" sign.

 

We haven't forgotten that some times the simple, low tech solution is the best.

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Mr. Chengkp75,

I have always wondered how ship anchors actually work to keep the ship from moving? I know they weighs tons but the ship weighs a bit more. ..

 

We'll see what Mr. Cheng replies but from what I remember when I owned a boat (yes, smaller than a cruise ship but seems the principle would be the same) it is not just the weight of the anchor and chain (some chain lays along the bottom of the sea) but also the flukes of the anchor dig into the bottom making it much more difficult to pull out.

 

Some chain lays on the bottom or at a shallower angle to make it drag the anchor in a horizontal, or near horizontal, manner which helps to make the flukes dig in and grab more. To raise an anchor it is rather easy if the vessel is situated almost directly over it allowing it to be pulled up in an almost vertical fashion, releasing the flukes from the bottom.

 

How'd I do Mr. Cheng? Am I even a little close?

 

Pretty spot on, Pyrate, you pass the US Power Squadron's test.

 

Yes, anchors are heavy, but they are made up of two parts, the "flukes" or the two blades, which are connected by a hinge pin that the "shank" or central shaft can pivot on. The flukes are more important than the weight.

 

When lowered to the sea bed, the anchor itself is not doing very much. The ship will then start to back away (down wind or current), paying out more chain as they go. Rule of thumb is to pay out 5-6 times as much chain as the water is deep. Then the ship will stop and set the brake on the windlass, and wait as the ship continues to drift aft. The ship will pull the anchor and the flukes will dig into the sea bed. When they "fetch" up in the sea bed, the anchor chain will start to take a strain, and the officer on the bow will watch for the strain (the angle from vertical that the chain leads from the bow) to reach a maximum and then ease off a bit. That shows that the anchor is holding, and the "catenary" or curve of anchor chain is acting like a spring to bring the ship back a bit. This catenary acts as a shock absorber to keep from pulling the anchor out.

 

To retrieve the anchor, the ship slowly steams towards it, bringing in the chain as it goes, until the chain is nearly vertical and it pulls the anchor flukes out of the sea bed. Once the anchor is free of the bottom, the chain will start to swing a little back and forth, and the officer on the bow will announce "anchor's aweigh" and the ship can start to get underway.

 

The holding ability of anchors and the amount of chain let out depends on ship size, anchor weight, weather, and most importantly what the sea bed is made of there (sand, mud, shell, rock).

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OK I get it now, it is the simple, last ditch effort to cut the anchor loose if they can't raise it. Thanks for the clarification. It was unexpected on my part on a billion dollar cruise ship to see something so simple as a big red sledge hammer hanging on the wall with a big "HIT HERE" sign.

 

 

 

I don't know how 'c'simple bugt we werewr at HMC on HAL ship and we were Very delayed in leaving. gthis was nextg to last day of our cruise. They could not raise the anchor and finally they cut and left it there. As it was We got back to PPort Everglades aboUTg 6 hours late. Peter was waiting to board for a RSVP cruise and we ate their lunch. Beccauss we ere so delayed they put out lNCdh in Lido for anyone who was hungry. :)I FORGET WHICH Ship btr think it could havew b een Eurodam.

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