What type of helicopter is onboard?

The SH-60 Seahawk is the correct answer because it is a multi-mission maritime helicopter commonly used by the Navy for anti-submarine warfare, anti-surface warfare, search and rescue, and logistical support. The SH-60 has several variants, including the MH-60R and MH-60S, which are specifically designed for different operational roles within the Navy.

The SH-60 is typically found onboard various naval vessels such as destroyers, cruisers, and amphibious assault ships, highlighting its integral role in naval operations. It is equipped with advanced avionics and mission systems, enhancing its capabilities to conduct surveillance, reconnaissance, and support for naval operations.

The other helicopter types mentioned have different roles and are not conventionally deployed on surface ships in the same capacity as the SH-60. For instance, CH-53s are heavy-lift helicopters primarily used by the Marine Corps, while AH-64s are attack helicopters used by the Army. The SH-50, while a legitimate helicopter, is less commonly referred to, and the SH-60 has largely supplanted its role in naval aviation.