Spain's AIP submarine — a large Navantia boat with a bioethanol fuel-cell air-independent power plant and a Tomahawk-class land-attack option. Famous as much for its troubles: an early design came out too heavy to surface, forcing a costly redesign before the first boat sailed in 2023.
Spain's new Aegis frigate — a Navantia-built warship pairing Lockheed Martin's SPY-7 radar and the Aegis combat system with a Spanish-designed integrated mast and a digital-twin "Shipyard 4.0" build. The high-end ASW-and-air-defence successor to the F100.
Spain's Álvaro de Bazán-class frigate — the first European Aegis air-defence combatant, carrying 48 Mk 41 VLS cells and shaping a generation of allied frigate designs.
A Franco-Spanish diesel-electric attack submarine family with optional MESMA air-independent propulsion, exported to Chile, Malaysia, India, and Brazil, and the backbone of India's Kalvari and Brazil's Riachuelo classes.