Royal Museums Greenwich ID SLR1812. Object 67771
Model mortar boat Project of 1805. Royal Museums Greenwich ID SLR2702. Object 68661
A note dealing with the use of armour plates for warships mentioned a proposal by Sir William Congreve made in 1805.(1) The Times dated 20 February 1850 described his design for an armoured floating mortar battery which should be shot-proof but never realized. Among his unpublished papers was another suggestion of attaching armour plates to the embrasures of casemates. The catalogue of the Museum of Artillery dating 1865 mentioned
-a model No. 24 (305-1038) of a shot-proof floating battery armed with 4 mortars. Fitted out with hollow iron masts making it possible to cover the whole rigging in a few minutes after she took her station. Proposed to be used for attacking the French Boulogne flotilla in 1804 (for more details A concise...).
-a model No. 25 (306-1043) of a mortar boat, called the Project, armed with 2-25.4ccm/10” mortars with a rudder at each end to prevent tacking in bombardment, built at Woolwich, England in 1805 (for more details A concise...).
-a model No.26 (307-1039) of a shot-proof mortar boat with a rudder at each end to prevent tacking while bombarding.
The Royal Museums Greenwich owns a model of a shot proof mortar boat which was proposed by Congreve between 1805-1809 according to their website. Her central battery was covered by an angled roof. The hull was pierced with several small gunports for small arms or rockets. Double-ended with rudders at both ends which could be locked in line with the hull to prevent the earlier mentioned tacking. The scale of the model suggest as dimensions 120 x 30 feet.
Note
1. Sir William Congreve, 2nd. Baronet (20 May 1772-16 May 1828), army officer, politician, inventor and publisher.
Sources
The Encyclopaedia Britannica. 11th Edition. Volume II Andros to Austria. London, 1910, p. 578
Catalogue of the naval models in the South Kensington Museum, London, 1865.
J.H. Lefroy. Official catalogue of the Museum of Artillery in the Rotunda, Woolwich. London, 1864, p. 168.
William Congreve. A concise account of the origin and Progress of the Rocket System. Dublin, Ireland, 1817.












