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[Varche]

Caught the tail end of a piece on the one show last night so open to correction…..

The European cruise ships create the equivalent pollution of 1 billion cars.

The chief “ eco officer” for MSC was proudly explaining what they were doing to reduce impact on the environment. .Some things were impressive like water and sewage handling. In Southampton they “ plug” the ship into the mains so theydont have to run the engines while docked. That mist be a thick cable………

Where are the environmentalists demanding the banning of cruise ships? Perhaps just stop oil folk could superglue themselves to the water line?

[Kevin Wood]

Caught the tail end of a piece on the one show last night so open to correction…..

The European cruise ships create the equivalent pollution of 1 billion cars.

The chief “ eco officer” for MSC was proudly explaining what they were doing to reduce impact on the environment. .Some things were impressive like water and sewage handling. In Southampton they “ plug” the ship into the mains so theydont have to run the engines while docked. That mist be a thick cable………

Where are the environmentalists demanding the banning of cruise ships? Perhaps just stop oil folk could superglue themselves to the water line?

That would require them to actually see the big picture, silly. 

.. and these ships drop enough junk into the sea once underway as it is...

[Marks DTM Calib]

Emissions for ships does not apply in international waters for most of the planet, so they tend to be clean(ish) in territorial waters, then switch over to any old cheap crap when outside.

When I was at GE delivering vessel control and propulsion systems, it was quite an eye opener as to the lengths the vessel designers went to to make this all happen, extra tanks, extra pumps, fuel heaters, different engine/governor/avr mappings etc etc.

They have at least introduced ballast water cleaning systems to try to stop the carrying of invasive species around the planet (some of which were even massive power consuming microwave setups)

[dave the builder]

Where are the enviro nmentalists demanding the banning of cruise ships? Perhaps just stop oil folk could superglue themselves to the water line?

surely you'd glue them to the keel or props                              ?

[TheBoy]

According to my "local" BBC Southampton News, the port has plenty of electric hook-ups for ships to power them in port, but none of them do, as its cheaper to run their onboard generators instead.

[ronnyd]

According to my "local" BBC Southampton News, the port has plenty of electric hook-ups for ships to power them in port, but none of them do, as its cheaper to run their onboard generators instead.

Yeah, 88 miles is kinda local. 

[Marks DTM Calib]

According to my "local" BBC Southampton News, the port has plenty of electric hook-ups for ships to power them in port, but none of them do, as its cheaper to run their onboard generators instead.

There is no 'standard' for shore supplies (what a surprise!) due to different voltages and frequencies of the ships and local setup.

Consequently most can only couple up in their home ports, and unless they are there for a a longer period its not worth the faff and hassles of a shore supply (its not some stonking great big plug, it is physical wiring bolted to a bus bar and big switch). The only ones I have seen use them in anger is naval vessels and some drill ships as they have home ports.

[Andy B]

Grey Funnel Liners used shore supplies when parked up alongside at home. The cables for each phase were around 2" dia .... no idea now of the cross section size .... 440V 50Hz but depending on ship size, there might have been 2 or 3 or 4 lots of supplies.
I've 'paralleled' up to shore supply quite a few times 

[Marks DTM Calib]

The drill ships were 3 phase 6.6kV 60Hz at around 12MVA (which was a pain as they ran an 11kV main 60Hz bus).

The QE carriers are 11kV at 60Hz (they, surprisingly, used rotary frequency converters) at a big power level, probably around 20MVA

Sleipner had no shore supply as it didn't really have a home port, it would have been 11kV 60Hz at probably around 12MVA to hit the base load.

The platform support vessels never had one as they rarely sat around for any time being the transits of the sea.

There is actually a standard for prison cruise ships, it was 6kV or 11kV (most shore supplies were dual voltage) at up to 20MVA

We always used to recon on a shore supply being about 3 times the emergency gen capability.