Complex sentence: At first glance, dazzle seems an unlikely form of camouflage, drawing attention to the ship rather than hiding it, but this technique was developed after Allied navies were unable to develop effective means to hide ships in all weather conditions.
Split into simpler sentences: At first glance, dazzle seems an unlikely form of camouflage, drawing attention to the ship rather than hiding it. The approach was developed after Allied navies were unable to develop effective means to hide ships in all weather conditions.