Comments on: Jumping Ship http://blogs.ei.columbia.edu/2011/09/25/jumping-ship/ Tapping experts in climate, geology, oceanography, ecology, sustainable development, global health, energy, food and water, State of the Planet captures stories of how the Earth works and how we can sustainably make our lives better. Fri, 24 May 2013 17:52:04 +0000 hourly 1 http://wordpress.org/?v=3.5.1 By: Christopher Sorlien http://blogs.ei.columbia.edu/2011/09/25/jumping-ship/comment-page-1/#comment-22228 Christopher Sorlien Tue, 27 Sep 2011 20:43:54 +0000 http://blogs.ei.columbia.edu/?p=18204#comment-22228 Hi Mike and Nano. If there is time and the current is too fast to get good data going forwards downstream, you can go backwards downstream, although the captain and pilot may not allow that. This was done on the Mississippi River: if there is a 6 knot current, instead of going downstream at 4 knots through the water plus 6 knots = 10 knots over the ground, you can head upstream at 2 knots through the water and end up going downstream over the bottom at 4 knots. OK, I understand that the current may be not that fast. But, it can be faster than that on the Missouri River near where I live, and probably the Mississippi.

If you try it and run aground or tangle up the streaner if you are using one, is still your choice.
Chris

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