Oars are an archetypal sign of "man against nature" struggles. It is our labor against the elements that represents what we are striving toward. To dream of rowing a boat or anticipating to do so is to dream of your struggle against circumstances. You may be feeling overworked or outright overwhelmed by trying to keep your head above water financially, relationally, or vocationally.
Are you straining in life to make progress? Do you feel as though you are working with inadequate support in your vocation, marriage, or other relationship?
Are you rowing against a prevailing wind of negativity or distractions from your aspirations?