Complex sentence: The "New Carissa" was a Panamanian-flagged dry bulk freighter optimized for carriage of wood chips owned by the Japanese shipping concern Nippon Yusen Kaisha via a subsidiary, Green Atlas Shipping.
Split into simpler sentences: The "New Carissa" was a Panamanian-flagged dry bulk freighter optimized for carriage of woodchips. It was owned by the Japanese shipping concern Nippon Yusen Kaisha via a subsidiary, Green Atlas Shipping.