BBC: The Mary Rose: A Tudor ship's secrets revealed
Posted on 08/28/2018 10:55:58 AM PDT by SunkenCiv
Thousands of shipwrecks litter the seafloor all over the world, preserved in sediments and cold water. But when one of these ships is brought up from the depths, the wood quickly starts deteriorating. Today, scientists report a new way to use "smart" nanocomposites to conserve a 16th-century British warship, the Mary Rose, and its artifacts. The new approach could help preserve other salvaged ships by eliminating harmful acids without damaging the wooden structures themselves.
The Mary Rose sank in 1545 off the south coast of England and remained under the seabed until she was salvaged in 1982, along with over 19,000 artifacts and pieces of timber. About 40 percent of the original structure survived. The ship and its artifacts give unique insights into Tudor seafaring and what it was like to live during that period. A state-of-the-art museum in Portsmouth, England, displays the ship's hull and artifacts.
While buried in the seabed, sulfur-reducing marine bacteria migrated into the wood of the Mary Rose and produced hydrogen sulfide. This gas reacted with iron ions from corroded fixtures like cannons to form iron sulfides. Although stable in low-oxygen environments, sulfur rapidly oxidizes in regular air in the presence of iron to form destructive acids. Corr's goal was to avoid acid production by removing the free iron ions.
Once raised from the seabed, the ship was sprayed with cold water, which stopped it from drying out and prevented further microbial activity. The conservation team then sprayed the hull with different types of polyethylene glycol (PEG), a common polymer with a wide range of applications, to replace the water in the cellular structure of the wood and strengthen its outer layer.
(Excerpt) Read more at eurekalert.org ...
BBC: The Mary Rose: A Tudor ship's secrets revealed
I’ve asked you and asked you to please not post photos of my family reunion on Free Republic.
If we keep preserving things we’re going to run out of room to store it.
Does it come in a Fourdor?
I couldn’t format the images properly to post, but it’s well worth a read.
LOL!
My favorite video of your family:
https://www.mlive.com/living/grand-rapids/index.ssf/2012/06/wedding_party_takes_the_plunge.html
thanks, will check it out!
Well, there's always room in the garage or in the guest room ...
There's a sign on the bridge that goes out to the site, "one axled haywains, one farthing, two axled haywains two farthings, Black Riders 50 gold pieces.
Does CSNY know about this?
Not the way we're headed to extinction, we won't. When the aliens come to our lifeless world, they'll be impressed and puzzled.
Hey, don't paint with such a broad brush. It's not the guy Freepers doing it. The girl Freepers are the guilty party.
Sounds like the method employed at the old residence.
No thanks.
Very little was mine.
The Mary Rose was Henry VIII’s Spruce Goose. Bigger is not always better; depends on the talent of the designer/builder.
I watched some videos the BBC prepared for kids on the history of the British people and from it I learned that probably 1/3 or more of ancient Brits were black. By tudor times I assume it was probably up to 60%. So those facial recreations are definitely wrong.
Well, there's a whole lot of ocean floor out there.
And it would be preserved in water.
We could.....
Oh - wait.
SunkenCiv i LOVE your posts and pings.
THANK YOU for you great work.
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