In which year did the Navy first show interest in utilizing airplanes as a naval weapon?

The Navy's interest in utilizing airplanes as a naval weapon first emerged in 1898. During this year, significant developments were happening in aviation, and the potential military applications of lighter-than-air and heavier-than-air craft began to capture the attention of military leaders. The Spanish-American War that same year highlighted the advantages of air reconnaissance for naval operations, prompting the Navy to consider the strategic value of aviation in naval warfare.

This early recognition laid the groundwork for future advancements in naval aviation, as the concept of using aircraft for reconnaissance and offensive operations was explored further in the years that followed. As the technology evolved, the Navy's commitment to integrating aviation into its operations became increasingly prominent, ultimately leading to the development of a dedicated naval air service. The other years mentioned in the question do not align with the Navy's initial expressed interest in airplanes; thus, 1898 stands out as a pivotal moment in naval aviation history.