The concept of "laytime" in maritime shipping refers to the time allowed for loading or unloading cargo at a port

http://reidbbcd962.wpsuo.com/tech-savvy-kiddos-exploringdiscoveringchecking-out-robotics-in-educationtrainingschoolingeducation-and-learninginstruction-1

The concept of "laytime" in maritime shipping refers to the time allowed for loading or unloading cargo at a port