There is no specific number for how many ships sink around the world in one week, as it varies depending on various factors such as weather conditions, maritime traffic levels, and accidents. However, according to the International Union of Marine Insurance (IUMI), there were approximately 105 total losses of vessels of over 100 gross tons in 2020, which equates to roughly two ships lost per week. This number is influenced by incidents like collisions, groundings, fires, and severe weather events.
It is important to note that these figures may vary from year to year, and there can be periods with higher or lower incidences of ship sinkings. Additionally, smaller vessels, such as fishing boats or recreational craft, may not be accounted for in these statistics.