Mirna (Type 171)

The Mirna class, also known as Type 171, was built by Tito's Kraljevica Shipyard for the Yugoslav Navy between the late 1970s and mid-1980s. The current country metadata lists the Netherlands, but the class is historically Yugoslav/Croatian rather than Dutch. It was designed to patrol maritime borders, monitor coastal waters, and provide a small naval presence at relatively low operating cost.

Technically, Mirna-class vessels are patrol boats, not full corvettes. Their typical fit includes light guns, navigation radar, communications, and in some accounts limited anti-submarine equipment. The class lacks the displacement, missile armament, and sensor depth of modern corvettes, but it is well matched to border control and littoral surveillance.

Operationally, the Mirna class served in patrol, maritime policing, training, and coastal presence roles. During and after the Croatian War of Independence, some units were captured, transferred, or repurposed. Their long afterlife shows how small patrol craft can remain useful when missions are limited to coastal security rather than high-intensity naval warfare.