Salvage of the U-864
 

The Norwegian Coastal Administration (NCA) has decided to award the contract for the possible salvage of the U-864 submarine and its cargo of mercury to Mammoet Salvage B.V.

Two options have been proposed to deal with the environmental hazard formed by the mercury in the U-864 submarine: (a) to encase the wreck and cover the seabed to prevent the spread of the pollution, and (b) to recover the wreck (salvage) and remove all the pollutants from the marine environment. Mammoet Salvage has proposed a safe and innovative salvage solution.

The U-864 time bomb
On 9 February 1945, the German submarine U-864 was torpedoed by the British submarine HMS Venturer. The U-864 sank about two nautical miles west of the island Fedje, just north of Bergen, with the loss of all 73 on board. The submarine's cargo included approximately 67 tons of metallic mercury which is highly toxic. As the U-864 was on a mission it was also carrying a full load of weapons. The vessel's wreckage is considered to be a potential long-term threat to human health and the environment.

Two alternatives
The Norwegian Parliament has to decide if the wreck and its cargo should be raised to the surface, or be encased on the seabed and the contaminated sediment capped to prevent the spread of pollutants. Mammoet Salvage has proposed a method to raise the wreck which satisfies the environmental requirements. If the Norwegian Parliament approves this method then the salvage operation is likely to take place in 2010. This decision will probably be taken before the end of 2008.

A solution
The NCA selected Mammoet Salvage B.V. for the potential salvage of the German submarine because of the company's innovative engineered solution. This together with the experience gained on the remote control salvage of the Runner 4 in the Baltic Sea last year, has resulted in a safe, fully remotely-controled operation. With this system Mammoet will raise the submarine and take away the source of pollution without the need for anyone working under water. Mammoet Salvage has found a solution to overcome one of the specific challenges: lifting the wreck from the unstable seabed.

Decision
The Norwegian Parliament now has to decide if the wreck and its cargo should be salvaged forever or be left in place and encased and capped.

Mammoet Salvage B.V. and affiliated company Mammoet Norge AS are part of the Mammoet Holding B.V. (heavy transport and lifting specialists) which was awarded the contract of the salvage of the Kursk Russian nuclear submarine in 2001. Since then Mammoet Salvage has carried out a range of salvage projects throughout the world.

I'd have thought it would be best to seal the wreck off....seeing as how it's a war grave.

Well, sealing off just postpones the problem. Someday even the best seal will be destroyed by the constant forces of the ocean. Plenty of people have died in that thing, lets make sure no one else is getting hurt by it.

I full agree... :yep:

Your probably right, but I still get a sense of unease at the thought of disturbing the dead in that thing. :hmm:

Anybody any idea why this submarine had that cargo on board and what the uses were of mercury at that time??

i think the sending of frog-men to evaluate the erosion status of the shell should be a first sensed step . don't know the mercury lifetime but i think the shell encaping solution should be a viable solution only if the encaping material as a higher lifetime than the mercury as toxic substance

I'm discovering the thing , the operation involving the u-boot was called operation Caesar (cargo for Japan) but if the operation's described on Wiki nothing about what the mercury would have been used for , any info .. someone

Well i find a little more info about her:

http://en.wikipedia.org/wiki/U-864

http://www.thehistorychannel.co.uk/s...ramme_3477.php

I'm pretty sure there isn't much Red Mercury in the sub, but this kind of mercury: Mercury(element) in Wikipedia

You are totaly right...thanks for your correction!

What an irony...the commander of an U-Boat loaded with mercury has as family name...Wolfram :-?

Ironic...isnt it?
Mercury and Wolfram deadly united in fate! :eek:

The same name as the guy whose stretched limo I hijacked on arrival at Houston for last months SS Meet :rotfl:

I just get the uneasy feeling that trying to raise a wreck that has been decaying on the ocean floor for over half a century will cause an even greater catastrophe than the slow leak from the wreck as it stands now.

Imagine how much more damage sixty-seven tons of mercury set free at once would do.

Let the dead rest and leave well enough alone.


I don't get the connection between mercury and the name Wolfram. If you're referring to wolframite, that's the most common, naturally occuring ore of tungsten.