Which aircraft, known as the Iroquois, is utilized for shore-based search and rescue duties?

The HH-1N, commonly known as the Iroquois, is specifically designed for search and rescue operations, particularly in shore-based environments. This helicopter variant has been utilized by the Navy for various missions that require versatility, including medical evacuation and personnel recovery. Its capabilities include excellent maneuverability, the ability to operate in diverse weather conditions, and the capacity to conduct operations over both land and sea, making it well-suited for search and rescue missions.

In contrast, other aircraft listed serve different primary functions. The MH-60H, for example, is designed for multi-mission capabilities and can perform anti-submarine, anti-surface warfare, and special operations, but it is not primarily designated for shore-based rescue. The AH-1Z is an attack helicopter focused on combat operations, while the U-6A serves as a utility transport aircraft without specialized search and rescue capabilities like those of the HH-1N. Thus, the HH-1N stands out as the correct choice for the role specified in the question.