At 2327 local time on March 21, 2019, the containership Marcliff was outbound from the Port of Yokohama, Japan, when it collided with the containership APL Guam, which was inbound to an anchorage at the port. After the initial collision, the Marcliff then collided with the containership Hansa Steinburg​​, which was anchored nearby. No pollution or injuries were reported. Damages to the three vessels w​ere estimated at $1,178,200.

​​The probable cause of the collision between the containerships Marcliff and APL Guam was the Marcliff master’s attempt to pass between the APL Guam and the anchored Hansa Steinburg with insufficient safe maneuvering room. Contributing to the accident was a lack of communication between the Marcliff bridge team and the APL Guam pilot and bridge team to establish their maneuvering intentions.