I have a 1926 home here in Ca.very close to the beach and have the same problems descibed here in this post. We have used 2 dehumidifiers on and off as needed.
I have few questions about this fan setup. My basement is very small, the house is a single story about 2100 sq ft, the basement houses the 2 down draft furnaces and a water heater, and is roughly 12'x12'. I have several vents around the perimeter of the raised foundation.

Could I benefit from this system even though my basement is small?

Does this vent run 24/7?