Ships transiting a choke point, such as the Strait of Hormuz, may face an asymmetric naval threat consisting of a swarm of 50+ knot, fast inshore attack craft (FIAC), armed with unguided rockets, anti-ship missiles (ASMs) or torpedoes. In such an environment, survival will depend on very close crew coordination and communication between the Combat Information Center (CIC), the bridge team, lookouts and crew-served weapon operators on board the vessel under attack, plus optimal tasking of supporting helicopters and armed unmanned aerial vehicles (UAVs). No single naval simulator provides adequate training for crews and their supporting air assets in such a swarm attack environment. Against a determined enemy, perhaps with little regard for their own survival, ships will require a carefully coordinated crew response to provide an acceptable chance of countering a swarm attack. This paper proposes a training methodology to prepare crews to counter a swarm attack that links conventional simulators to Serious Games utilities representing the target vessel's crew positions and associated air assets, opposed by multiple FIAC attacking in a swarm. The paper will consider the phases of a swarm attack and how simulators may be networked to train crews to survive. The training provided stresses the need for early recognition and identification of the threat; prioritizing FIAC to be engaged; tasking defensive weapon systems; and ordering initial maneuvers. As the attack develops, lookouts are trained to provide accurate information to the bridge and CIC, which will take evasive maneuvers and task the crew-served weapon operators. Having mastered self defense of their own ship, the trainer will allow crews to work with other vessels to improve situational awareness and multi-ship cooperation. The aim of the training is to ensure that crews facing a swarm attack are well coordinated and therefore best able to survive.