The JR passing through Miraflores Locks (thanks for screen cap Tom!)
It is surprisingly low-tech. Here are rope handlers bringing us the tie line in a dingy.
Boat is tied to "mules", little cog railways cars, on either side. They will pull us through locks.
As we get into narrow section of lock the rope from other side is thrown aboard. The ropes are used to haul on the steel cables attached to the mules.
Approaching the second set of locks, San Miguel Locks
On the Chagras River section. It's really hard to believe these container ships don't roll over all the time.
On Lake Gatun, the large artificial lake formed when the Chagras River was dammed.
Going back down to sea level through the final set of locks, Gatun Locks.
The Atlantic in the distance! Another successful transit over the continental divide and lots of sunburned faces in the mess hall in the evening....