First of all, the noise on the roof of the naval characteristic hospital may come from the operation of equipment or machinery. There are generally air conditioning units, generator sets and other equipment on the roof of hospitals, which may produce noise. If the equipment is aged or improperly maintained, it may cause noise problems.
Secondly, there may be noise generated by maintenance, construction or other activities on the roof. Heavy machinery or tools may be needed for hospital maintenance, reconstruction or expansion, and these activities will produce noise. In addition, there may be other facilities or equipment maintenance activities, such as fire protection system testing or cleaning tools used by cleaning personnel, which may also lead to noise problems.
Another possibility is that roof noise is related to climatic conditions. Strong winds or bad weather may cause noise on the roof, for example, when the wind blows through vents or heavy rain hits the surface of buildings.
Finally, if there are other noise sources near the roof, such as nearby construction sites, road traffic, airplanes, etc. It may also spread to the roof area of naval characteristic hospitals.
If the noise on the roof of the naval hospital bothers you, I suggest you report the problem to the hospital management department or the facility maintenance department so that they can find a solution.