U105

U105 is a designation used in multiple unrelated contexts to refer to different objects or entities. This article summarizes two of the most notable uses: a German World War I submarine and a Belfast-based radio station, both of which are commonly cited under the label U105.

In naval history, SM U-105 was a German Imperial Navy submarine that served during World War I. Built as part of the U-boat fleet, it conducted patrols in the North Sea and Atlantic waters before being surrendered after the war. Like other U-boats of its era, U-105 was part of the rapid expansion and subsequent demobilization of Germany’s submarine force, with records detailing its wartime operations and postwar disposition.

In broadcasting, U105 is a Belfast-based commercial radio station serving Northern Ireland. It broadcasts on the FM band and, in recent years, on digital platforms as well. The station is known for a mix of classic and contemporary music, along with local news, traffic, and entertainment programming tailored to listeners in the region.

Other uses of the designation U105 can appear in cataloging, product model numbers, and facility or equipment codes across various industries. Because the same label can refer to different items, disambiguation is often required in reference works to determine which U105 is being discussed in a given context. See also entries for related submarine designations and for regional radio stations that use numeric alphanumeric branding.