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British Railways
24-ton 'Dogfish' Ballast Hopper Wagon DB993348


BR Dogfish Ballast Hopper DB 993348 - Richard Salmon - Jan 1999

Dogfish DB993348 pictured in January 1999
Richard Salmon

DB993348 is a 24-ton vacuum-braked Ballast Hopper Wagon to diagram 1/587, designed by British Railways and codenamed 'DOGFISH'. The wagon was designed specifically for the use of the Civil Engineering Departments to carry new track ballast from quarry to worksite and to drop it at a controlled rate over track which was to be machine-packed or 'tamped'. It has three independently controlled chutes, one on each side and one in the centre. These are operated by large handwheels mounted at one end of the hopper, a platform with guardrails being provided for the operator. All Dogfish wagons were built with vacuum brakes and carried the 'DB' prefix to their numbers from new.

DB 993348 is one of 161 vehicles built between March and November 1957 under lot 2823 by Metropolitan-Cammell Ltd. at their Saltley Works, near Birmingham. Initially it was allocated to the Western Region and was based at Cheddar, Somerset for Batts Combe limestone quarry - limestone being one of the materials regularly used for track ballast. The SR mainly used granite from Meldon Quarry, Devon.

But why a Dogfish?

The exact origin of the BR practice of allocating 'fish' names to civil engineering vehicles is unknown. When railway operations messages were conveyed by morse telegraph or teleprinter, if the number of words in a message could be reduced, it could be transmitted more quickly. There were lists of code words for certain regular instructions and also for wagon type and capacity. The Great Western Railway favoured fish names for engineering wagons, and this may have been the origin. However, whatever the reason, if one refers to a 'dogfish', any railwayman will know that one is not referring to the similar 'catfish' or 'trout'!

And what is a dogfish?

The term 'dogfish' usually refers to a type of shark belonging to the order Squaliformes or to one of its constituent families; one of these families, the Squalidae, being known as 'dogfish sharks'. The Spiny Dogfish (Squalus acanthias) is found in many parts of the world, especially in shallower, temperate waters. The males mature at around 11 years of age, growing up to a metre in length; females mature in 18-21 years and are slightly larger than males, reaching up to 1.6 metres (about 5' 2"). In Britain this and other dogfish are sold in fish and chip shops as 'rock salmon' or 'huss'.

Recommended reading:

Civil Engineers Wagons Volume 1 - British Railways: 1948-1967 by David Larkin
Published 2011 by Kestrel Books, ISBN 978-1-905505-23-4
This book may be available from the Bluebell Railway's shop


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