The Class 37 is a type of diesel-electric locomotive that was built in the United Kingdom between 1960 and 1965. Known for its distinctive design, it features a long nose and a robust body, making it suitable for various types of rail services. With a power output of around 1,800 horsepower, the Class 37 is capable of hauling heavy freight and passenger trains. These locomotives were originally used by British Rail and have since become popular among railway enthusiasts. Many Class 37s have been preserved and are still in operation today, often seen on heritage railways and special excursions, showcasing their enduring appeal and reliability.