A Type 31 response to small-boat swarms

How might a Type 31 frigate counter Iranian small-boat swarms in the Gulf?

The proposed defence combines 57 mm and 40 mm guns with a Martlet-armed helicopter, plus possible additional light weapons. The helicopter could cover boats trying to move beyond the frigate's guns.

In this 2020 proposal, Iranian small boats threaten merchant shipping through disruption as well as posing a danger to warships. A Type 31's planned 57 mm and 40 mm guns would engage boats within gun range. Additional 30 mm weapons or miniguns are anticipated possibilities in the discussion, rather than a confirmed fit. A helicopter carrying Martlet missiles could engage boats trying to escape the frigate's gun range. Boats emerging from merchant traffic on different bearings would make firing arcs and several available mounts important.