Final answer:
Apollo 12 was the completely Navy-manned moon mission, with a crew of United States Navy officers who landed on the Moon in November 1969.
Step-by-step explanation:
The moon mission that was completely manned by Navy personnel was Apollo 12. Apollo 12 launched in November 1969 and was the second Apollo mission to successfully land on the Moon. The crew consisted of Charles 'Pete' Conrad, Richard F. Gordon, and Alan L. Bean, all of whom were United States Navy officers. This mission continued the exploration of the Moon following the historic first landing by Apollo 11. Apollo 12 targeted the Ocean of Storms and successfully carried out its objectives, including deploying scientific instruments and collecting lunar samples.