It's not a complete failure - but a pure gas turbine power plant does not seem to be the ideal solution. (right now)

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Originally posted by LeBarryboat:
Fascinating pictures showing the great lengths a shipyard must go to for repairs / modifications. Will the other Millenium-class ships have to undergo this modification too?

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Originally posted by Ernst:
..nevertheless have a higher fuel consumption of a higher quality fuel and I heard about problems due to the salt water spray in the air they are sucking in.

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The big SRN4 Hovercraft had four Gas Turbines each, not very far from the skirt - imagine the sea spray! However I think the fuel consumption was there eventual downfall - after 30 years.

See this image of an early SRN4 - notice the four Gas Turbine ducts (circles) at the rear.

[ 09-08-2007: Message edited by: Malcolm @ cruisepage ]

one Question. Could anyone tell me the purpose of the opening here in this picture?

looking around that site there are also pictures of many other ships including the QE2

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Originally posted by Ernst:

Yes - and I remember having heard that also the Radiance class will get diesel generators.

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Originally posted by Frosty 4:
Thank You, It always nice when one of we cruise talkers can help. Thanks again Pascal.
Frosty 4

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Not much worse than a stern dining room with traditional props that vibrate terribly. Alaska where the Mille class sails has strict stack emissions where the gas turbines can comply more easily than diesel.

The Mille class IMO is the best of the 90k tonners, for the hotel part of the ship.

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Originally posted by sunviking82:
Is it me or was the Millinium class poorly engineered. From the pod issues and now fuel guzzelling concerns it looks as someone didn't do their homework. Granted, when they were built fuel was cheap, but Princess built the Island / Coral and doesn't seem to have as many issues and the designs are similar, but the engineer much different.

I don't think RCL / Celebrity is getting a good return on their investment for these four ships.

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Originally posted by sunviking82:
[...]

I don't think RCL / Celebrity is getting a good return on their investment for these four ships.

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Millenium Propulsion System

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Originally posted by Ernst:

There was a settlement where Celebrity has been paid a sum equivalent to the costs of one of the Millennium class ships.

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Originally posted by recab:

But not because of the gas turbines!

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Oh No! Of course not.

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Originally posted by Ernst:

Oh No! Of course not.

The refit discussed in this thread has nothing to do with replacing malfunctioning equipment.

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Exactely, this thread is about giving better economy to all of RCCL´s GTV:s.

For almost two years I have been following the threads in this forum, with interest.
Finally I decided to register, so in that respect I am new to this forum.

Just a comment about the fuel economy of the LM2500 GT:s on the Millennium and Radiance class.

The fuel cost for the gas turbines burning marine diesel oil is about twice the cost compared to burning a fuel mix of IF180 (about 90% IF380 and the remaining 10% marine diesel oil).
Also, running the gas turbines at about 6MW in harbour means a load under 25%, where LM2500 is not very efficient (a gas turbine really should run as close to it’s rated maximum power as possible).
On Radiance (maybe also on some other of the Radiance class ships) they tried burning IF30 (about 70% IF380 if I remember correctly) but to no big success. The cost for replacing combustor parts was higher than the fuel cost savings.

I saw Constellation in Stockholm last week and it’s sad to see the black smoke coming out from the funnel. With gas turbines one normally can’t see any visible smoke, only certain days depending of the temperature and the humidity.