Purpose for multiple drain plugs?

[Dagenham Dave]

I just bought a 2019 SX210 and am curious. In addition to the main hull drain plug, there are plugs for the engine compartment, the fuel tank area and the sky locker. Please excuse my ignorance, but what is the purpose/logic behind all these plugs? Why not just have holes and the main drain like my last boat?

 

[AZMark]

I think they are there to keep water from filling up those compartments if something is leaking up from the bottom.
Alternately, you’re able to drain them if necessary if they somehow get filled up from the top like taking a wave.