Birkenhead Dock Disaster happened in 1909.
The churning paddle wheels of the Birkenhead drove her on with such force that the rock sliced through into the hull ripping open the compartment between the engine-room and forepeak. Water flooded into the forward compartment of the lower troop deck filling it instantly.
A disaster can happen at any time. The trigger depends on the kind of disaster.
The Hindenburg disaster occurred on May 6, 1937, when the German airship LZ 129 Hindenburg caught fire and was destroyed while attempting to dock at Naval Air Station Lakehurst in New Jersey, United States.
Birkenhead's population is 83,729.
Patria disaster happened in 1940.
Marchioness disaster happened in 1989.
HaBonim disaster happened in 1985.
Westfield disaster happened in 1871.
Feyzin disaster happened in 1966.
Kyshtym disaster happened in 1957.
PEPCON disaster happened in 1988.
Ryongchon disaster happened in 2004.