New Zealand’s Anzac-class frigates, primarily designed for anti-submarine warfare, have not been deployed for their intended purpose since their commissioning, according to recent information obtained through an Official Information Act request. While these vessels have not engaged in active anti-submarine operations, experts note they have nonetheless contributed to national security in other capacities.

Historically, New Zealand’s surrounding waters witnessed enemy submarine activity during World War II, with records indicating the presence of five hostile submarines—one German and four Japanese. This legacy underscores the strategic challenges posed by maritime threats.

Contemporary analyses suggest that New Zealand no longer operates within what was once considered a “benign strategic environment” supported by a rules-based global order. The evolving geopolitical landscape may require the country to reassess how it safeguards its maritime interests, especially in scenarios where international support is limited.

As threats evolve, there is growing debate about the role of the Royal New Zealand Navy and the strategic utility of its current naval assets. The absence of direct anti-submarine engagements to date has prompted discussions on future defense priorities and the need for enhanced self-reliance in maritime security.