The SM-2 Block IIIB's dual-mode guidance system is still unique among the missiles the Navy's fleet uses to defend against aerial threats.
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Although few know much about it, of the SM-2 variants that are in service now, as well as those that are planned for the future, the Block IIIB version is particularly notable. It has a dual-mode guidance package, with semi-active radar and infrared homing seekers installed on the same missile.
The Block IIIB, which first entered service in 1998, was way ahead of its time and its capabilities will continue to remain very valuable in the coming years as potential adversaries, especially China and Russia, field increasingly advanced electronic warfare systems and other countermeasures, as well as low-observable (stealth) technologies.

Obscure 23-Year Old Navy SAM Was So Ahead Of Its Time That It's Still In High Demand Today
The SM-2 Block IIIB's dual-mode guidance system is still unique among the missiles the Navy's fleet uses to defend against aerial threats.

Although few know much about it, of the SM-2 variants that are in service now, as well as those that are planned for the future, the Block IIIB version is particularly notable. It has a dual-mode guidance package, with semi-active radar and infrared homing seekers installed on the same missile.
The Block IIIB, which first entered service in 1998, was way ahead of its time and its capabilities will continue to remain very valuable in the coming years as potential adversaries, especially China and Russia, field increasingly advanced electronic warfare systems and other countermeasures, as well as low-observable (stealth) technologies.