By the 18th century, it was understood that a less northerly track was sufficient when nearing the North American coast, and galleon navigators steered well clear of the rocky and often fogbound northern and central California coast. According to historian William Lytle Schurz, "They generally made their landfall well down the coast, somewhere between Point Conception and Cape San Lucas ... After all, these were preeminently merchant ships, and the business of exploration lay outside their field, though chance discoveries were welcomed".