What order of magnitude is the hotel power (lighting, heating/air-conditioning, cooking, lifts etc) for a typical cruise ship? For example, one that has about 2000 guests and about 500 crew.
I've just got back from a cruise and several of the ports (so we were told by various coach tour guides) had a facility for the shore to provide power to the ship while it is docked, by means of temporary shore-to-ship power cables, so it can shut down its polluting diesel generators.
"As per international standard (ISO/IEC/IEEC 80005-1), cruise vessels must be connected to an electrical supply from the shore, at either 6.6kV or 11kV up to 20 MVA."
And unless they're using a motor-generator set, there would need to be some pick of a Hz to run it at :-)
Connecting a large cruise ship with a power consumption of up to 12 megawatts to the shore power grid is not as simple as it sounds. In addition to a technical infrastructure including a power plant, supply lines and conversion equipment, various tests and synchronisation measures are required to ensure uninterrupted ship operations. "
And I would think they would use a good bit of that power. Those statements are unlikely to be an "up-to" statement, and the ship probably does gulp down those kinds of numbers. Even when you're sitting quietly in your cabin, something is keeping four swimming pools warm and an immense mountain of macaroni salad cool.
Paul
And that's just one ship. Last week in Southampton there were four cruise ships in over the weekend! So you're looking at the grid having to supply an extra 50MW for several days - a not insubstantial amount. Then there are the commercial ships in dock too, including the big container carriers. They will require some power, although not as much as the passenger ships.
Figure on about a100W per human, so 2.5 MW or so. That's probably a top end estimate though.
3,300 bhp. Almost ten percent of all the ships engine power.
They try, but I feel they may fail to reduce consumption... ..So having had my travel iron confiscated for the duration of a short cruise, which was annoying as the first night was formal dress but no laundry services were available, and my shirt was creased after crossing Canada, I resorted to the hair dryer for heat and Gideons bible for pressure to remove the creases which i think used more power than my little travel iron...
Dave
Cold-ironing was not possible for Southampton as the local grid capacity was not sufficient for a city plus numerous cruise ships. Someone who seemed to know what he was talking about , told me there was a work-around for that but no details, presumably shore-based gas powered local generators , just for multiple cruise ships in the docks perhaps.
Not all the ships are equipped either.
There are numbers available. Fig3 Page3 of the following doc has the info.
A couple are below 2MW, and the longest ship is 11MW peak power. Presumably they measure the port stay, find the peak during that stay, and that's the dot on the graph.
"Hoteling Cruise Ship’s Power Requirements for High Voltage Shore Connection Installations JOURNAL OF MARITIME RESEARCH"
"Applying it to cruise ships, it seems that for over 200 meter ships only 60Hz is used."
At least some ships internal power train, includes redundancy, and the power feeds from shore power might equally come from more than one source (if available). You would not want to scare the customers, by having the elevator stop while in port.
Paul
Wow, I think you are the first person that I've heard of that has ever found a bible useful, a Gideons bible or any other . :-)
If it's in a German port the brown-coal might make it more polluting!
A tip that my wife read on a cruise forum: if clothes are creased after unpacking them, hang them in the shower and turn the water onto hot (so it doesn't actually wet the clothes) and let the steam soften the creases. If necessary, turn off the light so the extractor fan doesn't remove all the steam. And it works: half an hour of this treatment, followed by hanging with the shower off and the extractor fan on, does make creases drop out.
Not very energy-efficient, though.
One of the ports that had the capability was Kiel (Germany) and the tour guide seemed to be saying that solar panels on the roof of the building supplied all the power that was needed to run the ship. Hmmm.
I noticed that there was no shore-to-ship power cable in use at Kiel, but there was later on at Aarhus (Denmark), via three fat cables (one per phase?) that were unrolled from a huge drum on a dockside device and ran into the ship through a door. And it *was* electrification, because the signs on the device said so.
6 or 11 kV as a feed would need to be handled *very* carefully in an environment where there is inevitable a lot of water around...If it's possible, it's a great advance over having to keep on-ship generators turning using diesel engines: I'm well used to seeing a faint pall of smoke coming out of the funnels even when the ship is at rest. Though nothing like the fireworks at one of the ports on another cruise while the ship was moored up. I imagine the engines were being decoked while they were not needed for propulsion, and there were huge plumes of filthy black smoke, followed by rather alarming sparks and flames ten feet above the funnel. That's a lot of soot being burned off!
Even at night? Sounds like bollocks. And which building, anyway?
It was at Oskseekai. A grey metallic building about 10 metres cubed, punctured with square holes in patterns. I'd post a Google Streetview shot of it, but Streetview has no photos anywhere in Germany, which I suspect is due to some privacy / data-protection issue.
Ah, this looks like the building
No way would that power a ship.
Germans are so full of s*it
Perhaps the lights in the walkway.
Almost:-) The building is full of LEDs, and can be used as a 130000-Pixel LED display.
From the architects website:
"The shore power system was given a metal facade with various perforations, which is backed by a light installation of around 13,000 LED points. In addition to the basic lighting tailored to the lighting concept of the city of Kiel, various visualizations such as the CO2 saved or the docking of the ship can be seen. The building on the edge of the old town can be seen from afar both from the Kiel line and from the palace garden. The power consumption for the light installation is covered by a photovoltaic system on the roof of the landing."
Thomas Prufer
Naah... not as a rule. Maybe on a different server than the UK, and a script blocker kicks in?
Thomas Prufer
It seems to be a rule. Try advancing along a road using street view from any country bordering Germany and you’ll find that the imagery stops at the border.
Tim
That seems odd, as I'm sure Google did do some photographic work there. I'd guess its local laws then, as it does seem a little odd otherwise. Mind you does it matter as longas sensitive areas are munged out? Talking of generators though, surely the on ship ones have to provide a back up if the power from shore were to fail. You would not want to get stuck in a lift on a ship in port. Brian
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