The Blue Spear was first developed by the Israeli Aerospace Industries for the Israeli Navy in the 1960s in partnership with Proteus Advanced Systems, a Singaporean defense firm. Its current iteration is the regarded among the most advanced surface-to-sea missile systems in the world.

The Blue Spear flies at subsonic speed and is capable of hitting stationary and moving targets at a distance of 290 km. Skimming the water surface, the missile can home in on targets on its own, or it can be manually operated in flight. It also works in all weather conditions.