It is not uncommon to come across the sentiment that structural fatigue is a very complex phenomenon to explain, and an equally complicated issue to solve. A relatively recent high-profile case in Finland, which involved the Finnish Navy, brought structural fatigue into the national spotlight. In September 2015, when explaining that the vibration induced by the propulsion systems of their Rauma-class missile boats was the source of the structural fatigue on their vessels, the Finnish Navy spokesperson also indicated that “structural fatigue is terribly difficult to explain.” But is this the case?