During the recent pandemic, the seaport in Savannah Georgia, the third busiest in the United States, the seaport averaged loading or unloading 7.6 cargo ships per week. The average time to unload a ship is 1.65 days. Multiple cranes to load and unload the ship operate six days a week.

a. How many ships are waiting to be unloaded on average using Little’s Law?

b. During the pandemic, at times, demand doubled, how many ships are waiting?

c. If demand remains at 7.6 cargo ships per week and through better scheduling, training, and crane operations, the average time to unload a ship lowers to 1.20 days, how many ships are waiting?

d. What are possible bottlenecks in this part of the supply chain?