Caldercraft HM Mortar Vessel Convulsion A Highly detailed ship kit of a 1804 ketch rigged mortar vessel. The Convulsion was built iat Rotherhithe and commissioned for shore bombardment duties. She was over 60ft long and had a displacement of 76 tonnes. She was armed with one 10 inch mortar and four 18 pounder carronades. The Convulsion Kit Includes 10\" Mortar; Four 18pdr carronades; Walnut CNC cut parts; Double plank on bulkhead construction; Black & natural hemp for rigging. Full size plans along with a comprehensive instruction booklet make this attractive and unusual vessel ideal as an introduction to plank on bulkhead modeling. Model Dimensions Scale: 1:64 Length: 600mm Width: 200mm Height: 440mm Model Makers Glue Pack Contains: Deluxe Materials Speed Bond 112g Deluxe Materials Roket Max Thick Cyano (Super glue)