Steve (Another View)

[Chunk]

Here are the photos where I am having the jaggy lines by cropping and doing a little color and light adjustments. First one is untouched, just resized. Any ideas why the ropes are jagged in the second?

Here's an image that contains 3:1 enlargements of both your shots. You can see that the lines are jagged in both shots but in the lower one the lines are outlined with lighter color.
This can occur from using unsharp mask on an image which lightens the pixels along edges to make them seem sharper.