There appears to be some confusion regarding DR plots and IT (Intended Track) plots as well as how they apply to an EP.
A basic estimated position is based on a DR plot (time and speed only, no current, tide, leeway or other corrections applied) and the LOP (with bearing and time noted). When drawn, it is done by dropping a perpendicular from your DR position at the time of the LOP (shortest distance). The intersection of the perpendicular and the LOP is your estimated position. I tell my students that this is their "best guess" - then ask them what are the conditions around and ahead of the vessel (are the standing into danger) and what is or will be available to confirm/deny the EP.
The same can be done if you have a Circle of Position (COP) - but, if you have a COP from an object, you should have both the bearing and the range, which by definition is a fix, so no need to do the EP.
Once you have an EP, you do NOT redraw the DR plot. After all, it is not a fix - you do not know if you are really at this position. The only thing that you are sure of is that you are somewhere on the LOP. You may be on either side of the DR plot. You may take action if, based on the EP, you believe that you are standing into danger. I suggest that my students then look at the chart and determine when there will be something else to use for another LOP. Using the second LOP, you then have enough information to generate a running fix.
If you have drawn an DR plot and then corrected it for local tide and current conditions, this is usually called an Intended Track (IT) plot. Normally, you see this when there are significant known currents or leeway conditions. In that case, the original DR is known as the IT and the new DR is the one that you are going to steer to get you through the conditions. You provide instructions to the helmsperson to steer the second track, and the currents/tides should push your vessel down the first track (you are crabbing through the water). In this case, if you have a single LOP, you determine your EP based on the IT plot (the first DR plot), as this is where you WANT TO BE (should be) after taking into account tides, currents and leeway. In this situation, at the first fix, you should calculate the actual set/drift of the currents - because they will be different than what is reported in the Coast Pilot.
EPs are good pieces of information to have, but remember that this is a "best guess" as to your position. The actions that most folks would take is to look at the chart and determine what other information is available to confirm/deny the EP. For example, are there other buoys/aides/land marks to take another LOP? Is there sufficient change in the bottom depth (sharp gradients) or type (mud, rock, sand, etc.) for a depth reading to confirm the EP.
I have seen EPs that placed me on one side of by DR plot and have later fixes (10 minutes or so later), put me way on the other side. This has happened several times this year, even though I have drawn both DR and IT plots using currents recorded in the Coast Pilot. This is because the currents have changed so much (lots of rain and other runoff). Using the CP determine the local current data is a good GUIDE, but this is based on a multi-year running average. So if you are boating in an area that has experienced significant rain, storms (Ivan, etc.) or significant drought, the currents will not be what are projected. You can plan your DR/IT plots ahead of time, but need to confirm set/drift by plotting a couple of fixes to doing the math. Then redraw the DR/IT plots based on the actual conditions.
I know that there are others much more knowledgeable than myself on this, but I hope it helps.
The National Marine Manufacturers Association estimated there were 16.93 million boats in the US in 2008
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plot the ships position
Number of protons can be estimated. Its position in periodic table can be estimated.
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they look at telescopes
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It is used for the radio control of model aircraft,boats, cars.
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because you have to pass other boats on the right so by having the driver on the right it gives the best possible chance of survival in high risk situations lol
Joanna Ruane has written: 'Boats, boats, boats' 'Boats, Boats, Boats'
Elements with same property are grouped together. Property can be estimated by its position.
projected income statement is the estimated income statement to estimate the future business position.
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there called long boats because there boats that are long
The position of the hurricane over time.
the position of the hurricane over time
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Boats? No...But goats are!
It was the Throckmorton Plot, and before it was the Ridolfi Plot