Yes Fred, the SR does that which the electronic calculator can't do, that is to display visually a range of ratios or proportions at a glance. M:N :: O:P or M/N to O/P
ex: 2 is to 3 as 4 is to 6; 2:3 :: 4:6
For instance, if the ship is running at 8 knots the SR will tell you how far the boat will travel in one hour, 3.5 hrs, 6.25 hrs, or any length of time, and at the same time tell you how long it will take to travel any distance. Or it can tell what speed to travel for a certain distance in a certain amount of time. How cool is that? Using an EC would require many operations.
Many other ratios besides time, speed, distance are just as easy such as fuel consumption over time, fuel over distance, fuel over HP, battery rates of charge or discharge, conversions of weight, length, volume, and a ton of other stuff. This is all besides the ability to perform more interesting complex operations like current vectors and the sailings.
Glad to see another SR user on the site.
Thanks for the post
Cheers
ex: 2 is to 3 as 4 is to 6; 2:3 :: 4:6
For instance, if the ship is running at 8 knots the SR will tell you how far the boat will travel in one hour, 3.5 hrs, 6.25 hrs, or any length of time, and at the same time tell you how long it will take to travel any distance. Or it can tell what speed to travel for a certain distance in a certain amount of time. How cool is that? Using an EC would require many operations.
Many other ratios besides time, speed, distance are just as easy such as fuel consumption over time, fuel over distance, fuel over HP, battery rates of charge or discharge, conversions of weight, length, volume, and a ton of other stuff. This is all besides the ability to perform more interesting complex operations like current vectors and the sailings.
Glad to see another SR user on the site.
Thanks for the post
Cheers