In October 2014, Visby was amongst the Swedish vessels patrolling in an exercise for finding the source of "foreign underwater activity" which was rumoured to be a Russian submarine, identified by distress call. This rumour was denied by the Swedish authorities, who described it as an "intelligence operation".
In October 2014, Visby was among the Swedish vessels participating in an exercise to locate the source of "foreign underwater activity" that was rumored to be a Russian submarine, identified by a distress call. This rumor was denied by the Swedish authorities, who described it as an "intelligence operation".