- My Forums
- Tiger Rant
- LSU Recruiting
- SEC Rant
- Saints Talk
- Pelicans Talk
- More Sports Board
- Fantasy Sports
- Golf Board
- Soccer Board
- O-T Lounge
- Tech Board
- Home/Garden Board
- Outdoor Board
- Health/Fitness Board
- Movie/TV Board
- Book Board
- Music Board
- Political Talk
- Money Talk
- Fark Board
- Gaming Board
- Travel Board
- Food/Drink Board
- Ticket Exchange
- TD Help Board
Customize My Forums- View All Forums
- Show Left Links
- Topic Sort Options
- Trending Topics
- Recent Topics
- Active Topics
Started By
Message
Text from Captain at Natchez heading upriver.
Posted on 5/19/11 at 2:41 pm
Posted on 5/19/11 at 2:41 pm
quote:
Stalled out 1/2 mile above Natchez bridges for a little while. When she started moving I did 0.5 up to Natchez Beam light.
quote:
We are running light this trip. 10 loads and 18 mts. We usually have 15/22.
3
Posted on 5/19/11 at 2:45 pm to Beachtiger
so what does that mean for us non river captains?
Posted on 5/19/11 at 2:46 pm to chickman1313
Means he is making less than one mile per hour headed up river with a load of empty barges.
Posted on 5/19/11 at 2:47 pm to bayoudude
quote:
Means he is making less than one mile per hour headed up river with a load of empty barges.
damn, thats some strong arse current!
Posted on 5/19/11 at 2:49 pm to bayoudude
Good to hear. From what I understand, the faster the water moves, the less pressure on the levees.
Posted on 5/19/11 at 3:11 pm to Big McLargeHuge
quote:
From what I understand, the faster the water moves, the less pressure on the levees.
I don't know much about fluid dynamics, but this doesn't sound right.
Posted on 5/19/11 at 3:13 pm to Schwartz
The slower the crest moves, the longer it's exerting pressure on the levees.
Posted on 5/19/11 at 3:16 pm to Big McLargeHuge
quote:
From what I understand, the faster the water moves, the less pressure on the levees.
maybe less amount of time with presure on the levees, but the hieght determines the amount of pressure. a gallon of water standing still weighs the same as a gallon moving.....
Posted on 5/19/11 at 3:17 pm to Schwartz
It's Bernoulli's Principle, the faster a fluid moves the less pressure it exerts.
This post was edited on 5/19/11 at 3:18 pm
Posted on 5/19/11 at 3:28 pm to the LSUSaint
I'm going to go with what I read in Rising Tide over what I read on a message board.
Posted on 5/19/11 at 4:33 pm to Big McLargeHuge
Velocity at the center of the channel is much higher than velocity at the edges.
Posted on 5/19/11 at 4:37 pm to LSUJuice
That doesn't matter. What matters to me is that it's tougher than normal for him to get up stream and that the current us moving faster than usual. That is a good thing.
Posted on 5/19/11 at 4:52 pm to the LSUSaint
quote:
a gallon of water standing still weighs the same as a gallon moving.....
That's true but the moving water exerts less pressure. Doesn't matter though because the water right at the levee isn't really moving enough to make a difference. The real reason this is good is that we want the crest to come and go as quick as possible.
Posted on 5/19/11 at 5:07 pm to MountainTiger
quote:
Doesn't matter though because the water right at the levee isn't really moving enough to make a difference.
This was my point.
quote:
The real reason this is good is that we want the crest to come and go as quick as possible.
True. But we already know that it won't. Our knowledge of some barge captain having trouble moving upstream doesn't change the fact that the models have the crest holding for several days.
Posted on 5/19/11 at 5:13 pm to LSUJuice
It very well could be indicative of a crest that is speeding up moreso than the USACE anticipated. You're overthinking this a tad, IMO. ETA, high water season can increase the slope of the water by as much as 25%, with the water tumbling towards the gulf on top. This would make it a faster moving crest.
This post was edited on 5/19/11 at 5:15 pm
Posted on 5/19/11 at 6:02 pm to LSUJuice
quote:
True. But we already know that it won't. Our knowledge of some barge captain having trouble moving upstream doesn't change the fact that the models have the crest holding for several days.
Yes, that's probably right.
Posted on 5/20/11 at 8:44 pm to Beachtiger
I was in Natchez watching tugs navigate upriver with loads of barges. They were sure churning up lots of water struggling to make headway but moving at a snail's pace against the strong current. Probably expending 3x more fuel than normal.
On the flip side, barges travelling downstream barely kicked up any white water behind them as they flew by at high speeds. The current was very fast, very strong. I took some vid, will try to post later.
On the flip side, barges travelling downstream barely kicked up any white water behind them as they flew by at high speeds. The current was very fast, very strong. I took some vid, will try to post later.
Posted on 5/20/11 at 8:46 pm to Beachtiger
Tell him to run tighter on the bank. 
Posted on 5/20/11 at 8:52 pm to Athanatos
Yeah, I noticed a few smart captains navigating extremely close to the bank, but there were quite a few who chose to fight the current in the middle of the river. Idiots. Current is strongest/fastest there.
Posted on 5/20/11 at 8:54 pm to LSU Tigerhead
Northbound you have to get as tight as you can safely get. The lineboats usually don't worry so much bc they have so much power, but closer is faster. . . until you run aground.
Page 1 of 2
Popular
Back to top
Follow TigerDroppings for LSU Football News