Four regional centres were mobilized for the exercise, each reacting to a different scenario.

UNESCO: MEDIA SERVICES

The scenario established for the "Exercise IOWAVE 11" re-enacts the events of 26 December 2004, with a 9.2 magnitude earthquake off the North West coast of Sumatra (Indonesia), followed by an ocean-wide tsunami.

UNESCO: Social and Human Sciences

The exercise, with a command centre in Poundbury, Dorchester, will test their response to the scenario of a radioactive leak from a submarine with a damaged nuclear reactor core.

BBC: Nuclear submarine accident exercise in Portland