Gulf coast oil spill

[Urbane Guerrilla]

Stormieweather seems to have cofferdams in mind. Exerpt:

While oil continues to pour out, containment is the best strategy. BP has rushed to produce giant domes called cofferdams that it intends to place over the leaking well head, to isolate the oil from the surrounding sea. The plan would then be to pump the trapped oil and water mix into storage barges on the surface. It will take at least a week to fit these domes, and engineers are uncertain how they will perform at deep sea pressures.