Kraxis,

In the 1st Roman storm disaster the corvus most likely was a prominent component (live by the corvus, drown by the corvus...or something like that.)
Goldsworthy suggests the 2nd Roman storm disaster happened with quinquiremes that lacked the corvus. As an example he turns to the naval battle of Drepana that preceeded the 2nd disaster. The Carthaginians out sailed the Romans under Claudius and effectively rammed and sank the boats. They probably wouldn't have been employed so aggressively if the corvus was still in use.

In the 2nd storm off Cape Pachynus, the Carthaginians under Carthalo saw the storm brewing and withdrew to safety, while the Romans stayed close to shore and lost their entire fleet. The Romans did not want to engage with their 120 ships since they were escorting 800 transports.