The Panama Canal: What a Transit Is Actually Like

The Panama Canal is about 80 kilometres long and a full transit takes eight to ten hours. Ships are lifted roughly 26 metres above sea level, carried across a lake, and lowered again — using only gravity and fresh water, with no pumps involved at any point.

That fact is the thing to hold onto during the slow parts, because there are slow parts.

The sequence

Sailing from the Caribbean side:

1. Gatún Locks — three chambers in a flight, lifting the ship 26 metres. This is the most spectacular part and it happens early, often around dawn. Locomotives on rails — the mulas — keep the ship centred with sometimes less than a metre of clearance on each side.
2. Gatún Lake — a couple of hours of sailing across an artificial lake created by damming the Chagres river, past drowned forest and jungle-covered islands. Wildlife is genuinely visible: howler monkeys, crocodiles, and a great many birds.
3. The Culebra Cut — the narrowest section, blasted through the continental divide. This is where the greatest loss of life occurred during construction and where the walls are closest.
4. Pedro Miguel and Miraflores Locks — the descent, in two stages, back to sea level and the Pacific.

Where to be

• For the locks: forward, high, and early. The bow observation area fills up well before the first lock. If your ship opens the bow, be there before dawn.
• A balcony helps less than you expect in the locks, because the action is ahead and beside the ship rather than beam-on. It is excellent on the lake.
• Both sides matter. In the locks, the parallel chamber often has another ship going the other way, which gives you the best sense of the scale.
• Listen to the commentary. Transits usually carry a canal historian or pilot commentary, and it is the difference between watching water move and understanding what you are looking at.

Full transit or partial?

Some itineraries do a partial transit: the ship enters the Gatún Locks, sails onto the lake, turns round and comes back out the way it came. It is cheaper and shorter and it does include the most impressive locks.

What it misses is the Culebra Cut and the Pacific descent — and, less tangibly, the point of the thing, which is passing from one ocean to another. If the canal is why you booked the cruise, check the itinerary says full transit.

Practical points

• It starts early. Ships are scheduled into the locks around dawn. Set an alarm; the best part happens first.
• It is hot and extremely humid, and the deck has little shade. Water, hat, sunscreen, and expect to move in and out.
• Take the deck breakfast if the ship offers one, and do not go to a sit-down meal during the lock transits.
• Transit fees are enormous — a large cruise ship's passage costs into the hundreds of thousands of dollars, which is part of why canal itineraries carry a premium.
• The dry season, roughly January to April, is the more comfortable time. It is also when drought can affect canal water levels and, in severe years, transit scheduling.

The rest of the itinerary

Canal cruises are usually 10 to 15 nights and pair the transit with Central America and the Caribbean — Costa Rica, Colombia, Cartagena, sometimes Guatemala or Mexico. Cartagena in particular is a serious destination in its own right and is frequently the best port on the itinerary.

In our fare data these longer voyages sit in the grand-voyage group at a median of about $111 per night over roughly ten nights, which is good value per day for an itinerary of this length.

The short version

• A full transit is eight to ten hours and the best part — the Gatún flight — is at dawn.
• Forward and high for the locks; a balcony is better on the lake.
• Check whether your ship uses the historic locks with locomotives or the newer wider ones.
• Confirm it is a full transit, not a partial one that turns round on the lake.
• Hot, humid, little shade. Plan meals around the locks, not the other way round.
• Cartagena is often the best port of the trip.