Would a naval Skink-style mounting be useful?

Would a naval Skink-style quadruple 20 mm mounting help air defence?

It could provide useful local air defence, without changing the outcome of the war by itself.

The question proposes an Oerlikon-armed naval adaptation. The answer accepts its possible usefulness without confirming a production programme. The proposed naval armament should not be taken as the historical weapon fit of the land vehicle.