 Underwater Demolition Command

The Underwater Demolition Command (), abbreviated as DYK () and known until 2001 as the Underwater Demolition Unit (), abbreviated as MYK (), is the Greek Navy's elite special warfare unit.Carrying on the tradition of the Hellenic Navy in naval special operations, the unit was established in 1957 with help from the United States Navy's Underwater Demolition Team, when two Greek officers were sent to Little Creek in Virginia to evaluate a UDT operational capability for the Hellenic Navy.