U.S. CitiesCity-Data Forum Index
Go Back   City-Data Forum > General Forums > Green Living
 [Register]
Please register to participate in our discussions with 2 million other members - it's free and quick! Some forums can only be seen by registered members. After you create your account, you'll be able to customize options and access all our 15,000 new posts/day with fewer ads.
View detailed profile (Advanced) or search
site with Google Custom Search

Search Forums  (Advanced)
Reply Start New Thread
 
Old 09-18-2010, 11:13 PM
 
Location: Tennessee/Michigan
28,215 posts, read 47,628,039 times
Reputation: 19724

Advertisements

Container ships are taking longer to cross the oceans than the Cutty Sark did as owners adopt 'super-slow steaming' to cut back on fuel consumption

The world's largest cargo ships are travelling at lower speeds today than sailing clippers such as the Cutty Sark did more than 130 years ago.

Modern cargo ships slow to the speed of the sailing clippers | Environment | The Observer
Reply With Quote Quick reply to this message

 
Old 09-18-2010, 11:22 PM
 
4,919 posts, read 19,869,238 times
Reputation: 6215
Great News

The slower they go and the longer they take to travel, the more often distribution will need to turn to air cargo.

Ka-Ching
Reply With Quote Quick reply to this message
 
Old 09-18-2010, 11:31 PM
 
Location: Chicago
38,690 posts, read 89,233,190 times
Reputation: 29451
Good idea for those goods that are in no hurry to get to port and for reducing operating costs for the cargo fleet. As a "green" proposition, I'm not sold. Longer shipping times will encourage the move of some goods from maritime shipping to air shipping, which is much less fuel-efficient and much more polluting per unit of cargo. Even if they reduce fuel consumption and pollution by 50%, it would only take a small fraction of the cargo moved from ships to planes to completely offset those gains.
Reply With Quote Quick reply to this message
 
Old 09-19-2010, 12:40 AM
 
Location: Interior AK
4,729 posts, read 8,638,728 times
Reputation: 3359
Well, at least that explains why my stuff has been taking even longer than usual to get here!

Running slow may consume less fuel per hour, but if it adds significant hours to the voyage... does it really save you anything in the end? I'm still not sold on that equation.
Reply With Quote Quick reply to this message
 
Old 09-19-2010, 11:14 AM
 
Location: Lafayette, Louisiana
14,095 posts, read 23,693,841 times
Reputation: 7984
The longer a ship is at sea, the more they pollute the sea. In the Navy, we had to collect all plastic and chemical waste and hold it separate from the usual trash. At night we threw out into the ocean large brown trash bags filled with paper, food, and metal. We held the plastic and chemicals on board until we reached shore. We also didn't pump oil over the side of the ship. However, we regularly saw passenger cruise ships and cargo ships ignore such rules. The longer these cargo ships are at sea, the more plastic/chemicals/oil is thrown over the side. A steady cruising speed would be a better option.
Reply With Quote Quick reply to this message
 
Old 09-19-2010, 11:58 AM
 
Location: Interior AK
4,729 posts, read 8,638,728 times
Reputation: 3359
Here's a really stupid question. If you're traveling in your diesel/coal cargo liner slower than a wind-powered clipper travels in order to save fuel... why not just build some wind-powered cargo ships like the days of yore?
Reply With Quote Quick reply to this message
 
Old 09-19-2010, 12:40 PM
 
Location: Chicago
38,690 posts, read 89,233,190 times
Reputation: 29451
Quote:
Originally Posted by MissingAll4Seasons View Post
Here's a really stupid question. If you're traveling in your diesel/coal cargo liner slower than a wind-powered clipper travels in order to save fuel... why not just build some wind-powered cargo ships like the days of yore?
Because then you're not at the mercy of the wind for speed and direction. Also, today's cargo ships are elephants compared to the gnats that sailed the seas in the wind-powered era. The apparatuses needed to use wind power exclusively or primarily would be huge and these ships need to fit under bridges and the like. Nonetheless some cargo ships do have parasail-type thingies to use wind as a supplemental power source.
Reply With Quote Quick reply to this message
 
Old 09-19-2010, 12:55 PM
 
Location: Interior AK
4,729 posts, read 8,638,728 times
Reputation: 3359
well, you could still have an engine to help you along if the wind is not cooperating and to lower your masts for bridges, much like modern sailboats do. You still wouldn't be using as much fuel using it intermittently. Unless the wind is totally going in the wrong direction, adjusting your sails normally lets you catch enough wind to keep going... maybe not as fast right then, but still going.

In today's tech, I'm sure that we could make telescoping and tilt-up masts, larger sails, more sails, etc to increase the size of the ships, and use the fuel as supplemental instead. Didn't Germany just make a wind-driven cargo ship a couple years back?
Reply With Quote Quick reply to this message
 
Old 09-19-2010, 01:16 PM
 
Location: Chicago
38,690 posts, read 89,233,190 times
Reputation: 29451
Like I said, the wind power is supplemental, not primary.
Reply With Quote Quick reply to this message
 
Old 09-19-2010, 01:19 PM
 
Location: Interior AK
4,729 posts, read 8,638,728 times
Reputation: 3359
But I'm saying flip that around... wind primary, fuel supplemental.
Reply With Quote Quick reply to this message
Please register to post and access all features of our very popular forum. It is free and quick. Over $68,000 in prizes has already been given out to active posters on our forum. Additional giveaways are planned.

Detailed information about all U.S. cities, counties, and zip codes on our site: City-data.com.


Reply
Please update this thread with any new information or opinions. This open thread is still read by thousands of people, so we encourage all additional points of view.

Quick Reply
Message:

Over $104,000 in prizes was already given out to active posters on our forum and additional giveaways are planned!

Go Back   City-Data Forum > General Forums > Green Living
Follow City-Data.com founder on our Forum or

All times are GMT -6.

2005-2019, Advameg, Inc. · Please obey Forum Rules · Terms of Use and Privacy Policy · Bug Bounty

City-Data.com - Archive 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35 - Top