How was mail service expedited between Europe and America one ocean currents were observed studied?

Ocean currents played a pivotal role in expediting mail services between Europe and America during the age of sailing ships. Postal authorities took advantage of the knowledge gleaned from observing and studying specific patterns, directions, and strengths of these ocean currents to design optimal sailing routes across the Atlantic Ocean. By using favorable currents, such as the Gulf Stream and North Atlantic Drift, sailing vessels could optimize their journeys by catching these fast-moving water streams with reduced resistance. Tailwinds generated by these ocean currents further enhanced a ship's speed and helped cut down on overall travel time between the continents. As a result, ocean current knowledge greatly improved the reliability and efficiency of mail transmissions over the Atlantic Ocean for both merchants and ordinary citizens and became an integral part of planning sea routes used by sailing vessels during that era.