For shipboard main propulsion application, how does a Intercooled-Recuperated (ICR) cycle gas turbine configuration compare to a Combined Cycle gas turbine configuration?

Correct Answer: Option D — Although the ICR cycle configuration is lower in efficiency, it is lighter and takes up less space than a combined cycle configuration.

While combined cycle systems offer superior thermal efficiency, they are significantly heavier and bulkier due to the inclusion of steam turbines, boilers, and condensers. The ICR cycle provides a more compact and lightweight alternative, making it more suitable for space-constrained shipboard propulsion applications despite lower peak efficiency.