After docking in Colon we joined our tour group for the day to see some of the sites in Panama. This tour included stops at the new locks – Wide enough for the “neo” class ships that do not fit in the original canal. It also included a stop and boat ride on Lake Gatun where we visited the village of some indigenous people and looked for wildlife along the shore.

I had this idea (probably from childhood) that the Panama canal was one long canal. Which is not true at all. The canal is actually a series of locks that bring the ship up into lake Gatun then you cross lake Gatun and go down some more locks to bring you back to the ocean. So, the constraints on the ships are really the size of the locks. In 2016 they opened a new set of locks at each end to support the really large ships. Now the main constraint is really on the depth of the water in the lake.

Here is a view of both sets of locks on the Atlantic side:

The left side is the new lock which runs one way, They go one way for half the day and then the other way the other half of the day. the right side is the old locks which run both ways most of the time, but they can shut it down and switch to one way traffic if they have maintenance to do.

Here is a view of the village we stopped at.