A woman lowering ballast on a boat.
The captain of the boat is preparing for rough waters.
Not all women are captains. Lowering a ballast on a boat doesn't necessarily imply rough waters.
It is not common that the captain of a boat is a woman. Lowering of ballast on a boat doesn't imply that they are preparing for rough waters.
Just because a woman is lowering the ballast does not mean that she is the captain.