Complex sentence: This was the last time the ship would be in service under her own power, as she was moored in Puerto Belgrano from 1948 on, was rendered inoperable in 1951, and was cannibalized over many years for useful arms and equipment.
Split into simpler sentences: This was the last time the ship would be in service under her own power. Moored in Puerto Belgrano from 1948 on, the ship was rendered inoperable in 1951 and cannibalized for many years for useful arms and equipment.