If anyone in the forum is involved in the oil well problem, I would like to make a suggestion that could save countless dollars in damages if such a problem should ever occur again.
Build a series of barges that has a removeable center section designed with the weight and shape forming a "capping module", that can be lowered down to cover a given leak. Using the basic idea that is presently underway.
What is being suggested is, that these barges will act as a "mother ship" containing the capping module in it's center section and stationed near enough to off shore drilling rigs that it can respond in case of an event in a short time, just as a fire truck responds to a building fire.
These barges will manned and ready at all times and with as many as required to keep the response time reasonable.
There is no attempt here, to design the barge or to specify any equipment that the barge should contain, that is for the industry engineers to decide.
Roy