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Do you think unmanned shipping is in our near future? Maybe sooner than you think.
Researchers at a European classification society has designed a short-sea shipping vessel from existing technology, that is completely unmanned and runs on battery power. [The Maritime Executive]
The Maritime Executive: “ReVolt”, a vessel that is greener, smarter and safer than conventionally fueled and operated vessels. Autonomous, fully battery-powered and highly efficient – “ReVolt” is a new shipping concept that offers a possible solution to the growing need for transport capacity.
Instead of using diesel fuel, “ReVolt” is powered by a 3000 kWh battery. This reduces operating costs by minimizing the number of high maintenance parts such as rotational components. The vessel has a range of 100 nautical miles, before the battery needs to be charged. If the energy required for that is harnessed from renewable sources, this would eliminate carbon dioxide emissions.
Read more from The Maritime Executive here…
Do you remember when the timbers of an ancient ship were found beneath the World Trade Center site, near where the Twin Towers once stood?
Archeologists whisked away the mud-encrusted wood, and after 4 years of intensive study have determined the ships origin. [Lamont-Doherty]
Tree ring analysis of the white oak frame timbers show the vessel was built in or around 1773 in a Philadelphia shipyard.
What’s more, the white oak used in the mystery ships timbers came from the same old growth forest in the Philadelphia area as wood used to build Philadelphia’s Independence Hall, built between 1732 -1753, where the Declaration of Independence and U.S. Constitution were signed.
The ship’s keel, made of hickory, was the first breakthrough. Hickory had disappeared from Europe thousands of years before the Colonial-era which indicated that the ship had most likely been built in the northeastern United States.
Lamont-Doherty Earth Observatory | Columbia University: In a study now out in the journal Tree Ring Research, the scientists say that an old growth forest in the Philadelphia area supplied the white oak used in the ship’s frame, and that the trees were probably cut in 1773 or so—a few years before the bloody war that established America’s independence from Britain.
As trees grow, they record the climate in which they lived, putting on tighter rings in dry years and wider rings in wet years. In the process, a record of the region’s climate is created, allowing scientists to see how Philadelphia’s climate differed hundreds of years ago from say, New York’s Hudson Valley. The climate fingerprint also serves as a kind of birth certificate, telling scientists where pieces of wood originated.
The ship itself has been tentatively identified as a Hudson River Sloop, designed by the Dutch to carry passengers and cargo over shallow, rocky water. It was likely built in Philadelphia, a center for ship-building in Colonial times.
Read more of the Lamont-Doherty Earth Observatory | Columbia University report here…
by Mai Armstrong for the Working Harbor Committee.