Complex sentence: Neptuno was built by COSCO (Nantong) Shipyard CO, the keel was laid in 2013 and delivered to Neptuno Offshore PTE LTD on January 5th 2015,5 days later Neptuno left China heading to Campeche Bay, Mexico.
Split into simpler sentences: Neptuno was built by COSCO (Nantong) Shipyard CO, the keel was laid in 2013 and delivered to Neptuno Offshore PTE LTD on January 5th 2015. Five days later Neptuno left China heading to Campeche Bay, Mexico.