Ocean liners are large passenger ships designed for long-distance travel across oceans. They are built for comfort and speed, often featuring luxurious amenities such as dining rooms, lounges, and swimming pools. Historically, ocean liners played a crucial role in transatlantic travel, connecting cities like New York and London. Unlike cruise ships, which focus on leisure and entertainment, ocean liners prioritize transportation. They typically have a more streamlined design to handle rough seas and are equipped for long voyages. Famous examples include the RMS Titanic and the Queen Mary, both of which symbolize the golden age of ocean travel.