I thought this was a really interesting idea, with many possibilities....
"ONE of the first large cargo ships in 100 years to cross the Atlantic Ocean with the help of the wind will set off from Europe this month on a voyage that is due to make maritime history.
When the 10,000-tonne Beluga SkySail is well clear of land, it will launch a giant kite, which wind tunnel tests and sea trials suggest will tug it along and save 10-15% of the heavy fuel oil it would normally burn. If the journey from Bremen in Germany to Venezuela and back is successful, it could become common to see some of the largest ships in the world towed by kites the size of soccer fields."
Although, once you read the whole article it becomes clear that there are still a few wrinkles that need ironing out. These tankers and super tankers are shockingly polluting, fuel-hungry behemoths and need all the help they can get!!
"It is estimated that commercial shipping uses nearly 2 billion barrels of oil a year and emits as much as 800 million tonnes of carbon dioxide, or 4% of the world's man-made emissions. Shipping also releases more sulphur dioxide than all the world's cars and lorries."