Complex sentence: Admiral Manuel Sosa Avila, of the Navy of Guatemala was the first port commander for the newly founded Navy, which consisted of a frigate and two fast attack boats donated to Guatemala by the United States.
Split into simpler sentences: Admiral Manuel Sosa Avila, of the Navy of Guatemala was the first port commander for the newly founded Navy, which consisted of a frigate and two fast attack boats. The fast attack boats were donated to Guatemala by the United States.