Object Title

3.5 in swivel howitzer

3.5 in swivel howitzer



Object Number



Old Tower Collection

Physical Description

The gun, which is small, has the surface ornamented with mouldings and the cascabel button prolonged to form a short traversing lever or handle. The base ring is inscribed 17 FRIDRICS WAERCK. 71. The right trunnion is incised with the weight 116 tt with the letter T above; the left is stamped with an unrecognisable mark


Dimensions: Length: 20 in (50.8 cm), Overall length: 26 in (66 cm) Weight: 1 cwt 16 lb (58 kg)


Serial Number None visible


3.4 in (8.6 cm)


Bibliographic References

H.L.Blackmore, The Armouries of the Tower of London, Ordnance Catalogue, H.M.S.O. London 1976, P.47.


Probably one of forty-eight swivel-howitzers cast in 1771 at the gunfoundry of Frederiksvaerk for a Danish naval expedition against Algiers (The Land's Archive for Seeland, Copenhagen. Classenske Fideicommis' Arkiv 1.1.A,5 December 1770). The guns were mounted jin the bows of ships' boats. The weight letters 'tt' shown on the gun represent the Danish pound which equals 500 grammes. The mark on the left trunnion may possibly be a late use of the controller's mark F5 under a crown standing for Frederick V (reigned 1746-66), who established the Frederiksvaerk gun foundry in 1756.

'Frederics Waerck'
North Zeeland (Denmark); 1756-1828. This was the Royal Danish Gunfoundry established in 1756 (or according to some authorities 1759) by Major-General J.F.Classen. The factory motto 'Tandem bona Causa Triumphat' sometimes appears on its products.
Armouries, XIX.181, 195; Rotunda, II-152-8; Copenhagen, 364-388.