Is there a drain plug to change oil in a mercruiser 120 boat engine, or does it have to be pumped out?

I'm just looking for the easiest way to change the oil in my boat engine.Is there a drain plug to change oil in a mercruiser 120 boat engine, or does it have to be pumped out?
If thats a 4 cyl Chev you can drain the pan but your bilge will be a mess. The dipstick tube should be threaded, you can hook a pump line to it. I have a small pan with hose attached that goes under the oil pan (the hose runs out the drain plug).It drains any crap out that lays in the pan %26amp; its faster then pumping.