The Swedish Defence Research Agency (FOI) has together with the Naval Warfare Centre (SSS) developed a generic simulation model. The ambition is to increase the knowledge, in the Royal Swedish Navy, of electronic warfare (EW) in the duel between a radar guided surface to surface missile and a ship. This report describes the structure of the generic duel simulation model (DSim), using the simulation tool ACSL Graphic Modeller. Moreover it outlines how simulations can be visualised with the AFE programme. The objective is that persons, guided by the manual, should be able to handle the computers and run the simulation models without further assistance. This also accounts for those with limited background knowledge of simulation models and computer systems. The report describes some generic possible electronic warfare duel scenarios. The manual is currently unclassified. When correct system data for the missile, ship and EW equipment is added, the report itself is to be regarded as classified. The simulation is run by the use of a PC with Windows XP.