[[File: {{Infobox wagon|image = BR_983115_20180603.jpg|thumb|300px|right|caption = BR Dogfish DB983115 at Eardington, June 2018]]|construc = Chas Roberts (Wakefield)|status = Operational|wagno = DB983115|othernos = |designed = |diagram = 1/587|lot = 2939|wagtype = 4-wheel 24T ballast hopper|telcode = DOGFISH|topscode = ZMV|brakes = Vacuum fitted|built = 1957|years1 = 1996|events1 = Arrived on SVR|years2 = |events2 =|years3 = |events3 = |years4 = |events4 = |years5 = |events5 = |years6 = |events6 = }}From around 1955, BR adopted the 19 ton CATFISH and 24 ton DOGFISH as their standard vacuum-fitted small Steel Ballast Hopper wagons. The SVR has been home to three of the latter type. The DOGFISH was fitted with centre and side doors, allowing ballast to be dropped between the rails or to either side. A total of 1,249 of this type were built under Diagram 1/587, some by Metro-Cammell and others including the three SVR examples by Chas Roberts of Wakefield<ref>LTSV Wagons</ref>.
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