A very large amount of things that can be carried by a ship.
A shipload can make people think of trade, travel, and big amounts of things.
Examples:
The shipload of bananas arrived at the port.
The shipload of toys was sent to the other country.
The shipload of cars was being unloaded at the harbor.
The shipload of candy was so big, it took a long time to unload.
The shipload of treasure was so heavy, it almost sank the ship.
The shipload of presents made everyone happy.