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Jul
9
awarded  Popular Question
Aug
29
awarded  Nice Question
Jul
30
comment How do I calculate the distance a ship will take to stop?
What is L? Thanks
Jul
30
comment How do I calculate the distance a ship will take to stop?
Thanks, but I don't really now know how to do what you are saying.
Jul
29
comment How do I calculate the distance a ship will take to stop?
It pulls realtime from the ships antenna and I'm writing javascript code to make calculations on the data. Thanks
Jul
29
comment How do I calculate the distance a ship will take to stop?
You guys are way too smart for me. So let's say I have 4 points in time with 4 speeds: V1,T1,V2,T2,V3,T3,V4,T4. How would I put that into the equation? Thanks
Jul
29
comment How do I calculate the distance a ship will take to stop?
Also I'd like to add that some ships have a block coefficient of around .8, loaded tankers, and others have a much lower one. Some ships float forever and some slow much more quickly than others. I've had ships where I was full astern trying to peel off the last 1 knot. Granted the propeller is a variable in there too. Since I am creating a system for all pilots to use, I was hoping it could be done using only velocities and times as many ships are chinese and don't have the education to determine a block coefficient. Determining exact displacement is also a problem. Thanks Again.
Jul
29
comment How do I calculate the distance a ship will take to stop?
Thank you for your detailed answer. The main problem is that I do not know the block coefficient of the ship. All I have is velocities and times. I was thinking that maybe figuring out the change in acceleration, jerk, would help me estimate the distance. I guess the question is will the change in acceleration be the same from 15-10kts and 5-0kts? Do you think this would work? Please remember I have limited physics knowledge. Thanks!
Jul
29
comment How do I calculate the distance a ship will take to stop?
Well, I have limited physics knowledge. I was thinking that since the acceleration is changing, I must determine the rate at which it is changing. The problem is, I only know velocities and times for the ship. I do not know the effect the shape of the hull has on the drag or its block coefficient. I'm not sure if the jerk equation will work, but I was hoping to test it and see. Thanks
Jul
28
awarded  Student
Jul
28
asked How do I calculate the distance a ship will take to stop?