Finnish Navy’s Commodore Veli-Pekka Heinonen spoke to Jane’s recently on the upgrade program of the Hamina-class fast attack craft (FAC).
By Flash 285 (Own work) [CC BY-SA 3.0], via Wikimedia Commons
According to him, the current Umkhonto naval surface-to-air missile currently on board the Hamina-class FACs will be updated with an improve variant.