Which factor does NOT influence the size of a sewage holding tank?

The size of a sewage holding tank is influenced by various operational and logistical factors. The ship's mission determines how long it will be at sea and what type of operations it will perform, which in turn impacts the expected sewage production. The crew size is also a critical factor because a larger crew will generate more waste, requiring a proportionally larger holding tank. Additionally, the overall size of the ship usually correlates with the number of facilities and the potential amount of sewage generated.

In contrast, seasonal variations typically do not have a direct impact on the size of the sewage holding tank. While they may influence water temperatures, sea conditions, or even the operational demands on the ship, the tank itself is sized based on consistent factors such as the mission, crew size, and the physical dimensions of the vessel. Therefore, seasonal variations are not a relevant consideration when determining the tank’s capacity.