Which Intamin launch coaster is located at ViaSea?

The Intamin launch coaster located at ViaSea is indeed Red Fire. This coaster distinguishes itself as a notable attraction in the park, featuring a powerful launch system that propels riders from a stationary position to high speeds within seconds. Red Fire is particularly recognized for its thrilling elements and innovative design, showcasing Intamin's expertise in coaster technology.

Other coasters mentioned in the choices are significant as well, but they are located at different parks. For instance, iSpeed is a famous Intamin launch coaster found at Mirabilandia in Italy, while Gold Striker is a GCI wooden coaster located at California's Great America. Nefeskesen, while it shares the thrill ride concept, is a unique design and not classified as a launch coaster like Red Fire. Thus, the prominence and location of Red Fire make it the correct choice in this context.