Besides, with the AW159s being our defacto ship helicopters, we need to find a small anti-ship missile they can fly with, and the Penguin could be just the missile.
Original(?) PN spec of 150kg --IIRC-- pretty much drained the pool, hence Spike NLOS.
Deployment on the MPAC pretty much accomplishes le vaunted commonality ideal
Weighing even less than Spike NLOS, Sea Venom is the conventional match for Wildcat.
Differences in philosophy between rotary-air launch and surface-ship launch can run the
risk of overloading the former (compared to Sea Venom, Penguin weighs about 390 kg
all-in, and Marte MK2/S just north of 310 kg) --or, far worse, under-arming the latter,
when the 'commonality' mantra is pimped too hard.