No PCV valve, is this right?

[nextboat1]

I was looking at the boat today and noticed that one vavle cover has a hose and plastic elbow inserted into it that lays on top of my intake (vent I'm assuming) and the other valve cover is solid with no ports or holes for a vent or PCV valve. My gut tells me that this is not right, but any help or insight would be appreciated . My engine is a mercruiser 5.7 with an alpha gen II drive.

 

[MikDee]

It's supposed to be attached to your flame arrestor, right up against it for it to suck up any vapors. There should be a mounting for it there?