Complex sentence: The USS Monocacy, a shallow draft gunboat built for service on the Yangtze River, was preconstructed at Mare Island Navy Yard in 1912 and then dismantled and shipped to Shanghai, China.
Split into simpler sentences: The USS Monocacy was a shallow draft gunboat built for service on the Yangtze River. It was preconstructed at Mare Island Navy Yard in 1912 and then dismantled and shipped to Shanghai, China.