cdiver2
Contributor
cdiver, I agree with much of your post, but as to the above, if your figures are accurate (I have no reason to doubt you, but haven't checked), please consider:
Airliner emits "x" CO2, and carries 350 passengers (give or take)
Ocean liner emits 7x CO2, and carries 3500 passengers (give or take)
Therefore:
emissions per airline passenger = x/350
emissions per cruise ship passenger = x/500 (roughly 30% less)
That may be the reason you don't hear about it in the same critiques as the airliners get.![]()
JB I am not sure my figures are correct, I was trying to recall from an article I read a month or so ago. However if it is wrong then it is on the low side, I was really amazed at the difference between aircraft/ships. The story was not so much about pollution but a experiment to cut down on emissions from shipping. The experiment, there is a large cargo ship sailing from Europe to the US with a VERY BIG kite flying from the bow at something like 600 feet, the theory is it will cut down on emissions and cost. If it works and shipping Co go for this in a big way then I think it will be a big step forward in the right direction.
Gone with the wind on 'kite ship'
By Steve Rosenberg
BBC News, Bremerhaven, northern Germany
Ms Beluga is now on its way to Guanta in Venezuela
Kite in action
There is something rather magical about being up on deck of a giant cargo ship as it pushes its way out to sea.
Ten thousand tonnes of metal heaving through the water, the ship's giant masts glistening in the winter sun.
But there is something even more magical about being aboard MS Beluga SkySails.
On the face of it, this vessel - which is carrying parts of a timber production line to Venezuela - looks like any other cargo ship.
See how the kite ship works
In recent months, commercial shipping has been criticised for not doing enough to tackle global warming. Of all the CO2 being pumped into the atmosphere today, 4% comes from ships. That's more than the aviation industry, primarily because 90% of global trade is done by sea.
MS Beluga SkySails believes it has a solution. It has set sail on a mission to turn the oceans green.
Once the ship has reached the open sea, it reveals its brand new weapon in the fight against global warming: a kite.
Twisted spaghetti
The 160sq m (1,722sq ft) blue-and-white kite is winched up a mast, strings dangling like twisted spaghetti. We can demonstrate that you can combine economy and ecology
Verena Frank, Beluga Shipping
For half-an-hour or so, it sits there at the top of the mast, not doing a great deal.
Wind power is a wonderful thing, but you do actually need some wind to make it all work - and there is not very much at this particular moment.
Half-an-hour later, though, the wind has picked up and the kite is flying hundreds of metres in the air - and helping to tug the ship along.
Kite power means the ship's engines down below can work on reduced power: and that means fewer carbon emissions.
It also means smaller fuel bills. With the price of shipping fuel having doubled in the past two years, kite power is promising big savings.
MS Beluga SkySails believes its fuel bill will be cut by £800 ($1,560) a day.
"We can demonstrate that you can combine economy and ecology," Verena Frank of Beluga Shipping explains.
"Economy, because you can reduce fuel consumption and fuel costs, and on the ecological side of things, we reduce emissions."
Magic wears off
The kite is controlled by computers. One computer helps it to fly in figures of eight in the sky - maximising the power it produces. Another computer adjusts the kite's direction.
If the project is successful, expect to see even bigger kites soon - some up to 5,000sq m (53,820sq ft) in size pulling ships across the seas and oceans.
After several hours on board the ship, the magic starts to wear off.
The sun has gone down, it is freezing cold. To warm myself up I start thinking of the ship's final destination - Venezuela.
But I will not be seeing the South American sun. By the evening, the ship has returned to chilly Bremerhaven to drop off the journalists, before setting sail - again - on its transatlantic journey.
The point of my post was, it is not just one thing (aircraft) causing all the pollution, I think we have to take the blinkers off and look at all aspects of our lives.
I found this article on the same thing
BBC News Player - Ship using 'sail' technology
BBC News Player - Ship sails powered by kite