Defending stationary warships at Bahrain

How did HMS Lancaster and the Hunt-class vessel avoid being sunk in the attack on Bahrain described in the question?

Poor targeting or base defences are suggested explanations, with uncertainty about the frigate's ability to use its own sensors and missiles.

HMS Lancaster and the Hunt-class vessel are described as stationary targets alongside at Bahrain. Poor targeting offers one possible explanation for their survival, while the base's defences offer another. The frigate is thought unlikely to have been configured to use its missiles and sensors, but its readiness is not established with certainty. The exchange cannot determine which defence or targeting failure actually prevented a loss.