Terms & Glossaries of Shipping and Trading


Panamax is the maximum beam that allows vessels to pass through the locks of the Panama Canal (specifically used for dry bulk and container vessels).

What is Panamax?

Panamax and New Panamax (or Neopanamax) are terms for the size limits for ships travelling through the Panama Canal. The limits and requirements are published by the Panama Canal Authority (ACP) in a publication titled "Vessel Requirements". These requirements also describe topics like exceptional dry seasonal limits, propulsion, communications, and detailed ship design.