D617

D617 is a designation that can refer to several different entities, most notably a specific type of steam locomotive and a location code.

In the realm of railway history, D617 is the classification for a class of 0-6-0 steam locomotives built for the Great Western Railway (GWR) in the United Kingdom. These locomotives were designed by George Jackson Churchward and were a development of earlier designs. They were primarily used for freight duties across the GWR network. Production of these locomotives spanned several years, with a significant number being built. Over time, many of these engines were either withdrawn from service or rebuilt into other classes. The "D" in the classification typically indicated a specific wheel arrangement or usage category within the GWR system.

As a location code, D617 is often used in various data systems, such as those employed by airlines or logistics companies, to identify a particular airport, warehouse, or shipping hub. The specific meaning of D617 in this context would depend entirely on the system in which it is used. For example, it might represent a specific gate at an airport or a particular depot within a supply chain. Without further context, its precise geographical or operational significance remains undefined.