Skip to comments.CA: ARB funds study of world’s first hybrid tugboat ( ARB = Air Resource Board )
Posted on 11/24/2010 12:56:50 PM PST by Ernest_at_the_Beach
Diesel emissions cut by 70+ percent
A new study sponsored by the CA Air Resources Board reveals definitively that clean hybrid technology can be used as successfully for tugboats as it has been for cars, buses and trucks.
Thanks to research funded by ARB and conducted by UC Riverside, we now know that when compared with their diesel powered cohorts, a hybrid tugboat can reduce emissions of soot by about by 73 percent, oxides of nitrogen (which helps cause smog) by 51 percent, and carbon dioxide, which contributes to global warming, by 27 percent.
The findings are significant due to the heavy impact port pollution caused largely by diesel-powered ship engines and, to a lesser extent, smaller harbor craft such as tugboats has on regional air quality. The twin Ports of Los Angeles and Long Beach are the largest contributors to air pollution in the South Coast Basin. Diesel pollution in particular can have devastating health impacts, including cancer and a host of respiratory and cardiovascular ailments.
The clean little tug used in the study, the Carolyn Dorothy, runs on four diesel engines and 126 batteries. Built by Seattle-based Foss Maritime, it began working the ports of Los Angeles and Long Beach in January 2009 and is believed to be the first and only hybrid tug in the world.
The ARB/UCR study can be viewed online at: http://www.arb.ca.gov/ports/marinevess/harborcraft/documents/hybridreport1010.pdf
[Built by Seattle-based Foss Maritime, it began working the ports of Los Angeles and Long Beach in January 2009 and is believed to be the first and only hybrid tug in the world. ]
Likely one of the last as well. 126 batteries replaced once a year under heavy use - there’s $20,000 plus. Four diesels plus electric motors is a lot of extra hardware and maintenance. We’ll see.
an unelected body . answerable to no one, not even fellow scientists.. running California in the weeds.. and the sheep bleat on.
No doubt the tug will be steered to State and Federal contracts.
Is it going to run on fish oil?
This strikes me as being on the same level of nonsense as carbon restrictions on chainsaws. Let’s say we reduce carbon emissions of all Tugboats by 70 percent. Given the overall contribution of tugboats to the carbon emissions, would the effect be measurable? If people, of their own accord, want to build tugboats or chainsaws that reduce carbon emissions, more power to them. I could give a crap, so long as the cost or inefficiency of their efforts aren’t passed onto me. But the EPA doesn’t deal in reason or reality, and once some nut does their part to contribute to environmental pop, the regulations and new standards will rain down from bureaucratic heaven.
About time they reined in those durn tugboats...wonder if they could do something about those big ol propellers churning up the mud? Need to put a stop to that.
Don't know if Fish Oil is acceptable as an environmentally safe fuel.
Maybe the crew divides their time between working and fishing for fuel....HAHA!
Hey Mary, just two questions.
At what cost vs normal tugs. And please amortize that over the useful life of the average tug.
I’d also like to see a chart showing the percentage of tug pollutants versus other pollutants, like cars and trucks.
(The curmudgeonly balloon popper)
People be Damned....
Surely you jest?
I mean, we need to set up something like the Manhattan project to save the world from the rapidly approaching menace of TUGBOAT emissions.
Doom is at our door and we will have to throw ourselves on the mercy of Providence and the wisdom of CARB for us to have even a remote possibility of the survival of the human race......
These people are nucking futs!
Should she sink 129 batteries worth of acid poluting the harbors......oh, yeah....the tank from the four diesels too.....how damn many tugboats off CA coasts anyway? What the hell good is a change like this gonna do? It’s a UC study giveaway and CAs version of pork.......only with CA, there ain’t no ‘pork’ left - only debt...
*Starkist is a reference only and you are free to substitute your brand but the effect will be the same
**We buy Albacore off the boats and can it ourselves
I get the FReeper Popcorn concession the first time the tug looses power and the oil tanker hits the bridge supports and rips a 126 foot gash below the water line...
Many ships, like locomotives, have been using a diesel-electric combination for many decades.
I’m yer first customer in that event!
I used to live on several acres and still have all the acoutrements of outdoor maintenance. I live on a 1/3 acre lot in a subdivision and the biggest ‘tree’ I have is a bush that has runners that grow fast.....every once in a while I’ll get out that Poulan and fire it up and rev it up about a hundred times and go cut one of them runners. Funny, it really pisses off the neighbors...I can’t imagine why...
No doubt since I am a Tug Captain. I would not be caught dead on that thing. Uggghhhh! Tug Volt for Dolts. These people are beyond nuts they are dangerous.
My hat is off to you just for being able to start that Poulan. I heat with firewood, and have enough cut, split and stacked in the 1/2 acre or so that makes up my back yard to keep me warm for the next twenty or thirty years, but I still can’t resist going out and cutting a few cords every year. I own some great saws, all modded, and I run them at 32/1 fuel ratio, causing some of my liberal woodcutting friends to pull their hair out, but anytime they rag on me about going to 50/1 I remind them that I’ve never blown up a saw.
“Many ships, like locomotives, have been using a diesel-electric combination for many decades.”
That ain’t the way it works for locomotives.
Yes, they are called “diesel-electric”, but there is nothing about them that could be considered to be “hybrid”.
The main engine in a locomotive turns a generator (or alternator, these days), which produces electricity which then powers motors connected to the locomotive’s axles.
If the diesel isn’t running, no electricity, and “no go”. There is no battery-power “alternative” propulsion scheme.
The reason they are designed this way is the impracticalities of designing a “transmission” that could directly connect the engine to the axles. It’s been tried, but never successfully, at least in American mainline railroading.
There are a very few diesel engines also equipped to run as “straight electric” engines in confined areas (tunnels) using a third rail for power pickup. Amtrak trains from Albany south to New York City use this scheme to get into Penn Station. Long Island Rail Road has a few “dual power” diesels, and Metro-North has a fleet of them. But again, these are not “hybrids”. Either the diesel engine is providing power (in non-electrified territory), or the diesel is isolated and shut down and the locomotive is running off third rail power.
Oh yah, I know that’s not a “hybrid” in the same sense, but buffer it through some batteries and it would be. It’s not all that far off. There is an efficiency angle, too, even in the diesel-electric in that the diesel engine can run at a (more) constant and efficient RPM and take advantage of the extreme torque of the electric motors.