The "Hefei Maritime Bureau" you mentioned should be the local maritime bureau in Hefei. At present, it is a career establishment, and there is no need to take an examination of civil servants. The recruitment of civil servants is not open and fair, and it is generally difficult to get in. If you want to leave, find a relationship quickly.
The local maritime bureau is in charge of inland river shipping and safety. It rarely goes abroad to work, and the labor intensity is not great. Girls in general positions can be competent. What recruiters call "hard job, suitable for men" is nonsense. Moreover, you don't have to do anything you want, and the unit will be allocated according to the needs of the unit.