On the ship side, they're typically either waiting for cargo to arrive at the port or waiting to unload cargo at the port, one or the other. Either the cargo hasn't arrived yet at the terminals for them to come in and berth to load the cargo; or on some of the unloading, there might not be some capacity in the terminal to unload the cargo. Typically most of those vessels are waiting for cargo to arrive at the terminal or to be unloaded.
On September 26th, 2018. See this statement in context.