Chris Mack Jr. is the new chief operating officer of Foss Maritime, the Seattle-based company announced via social media on July 20. Mack, a Tacoma native who has been with the company since 2005, was elevated to the COO role and tasked with overseeing all of the company’s harbor services activities centered around “delivering operational excellence including safety, efficient operations, service delivery, technical management, organizational well-being, including engagement and development,” according to the company. He will be responsible for managing marine assurance, human resources and labor, fleet engineering and the company’s regional management teams in Washington, Oregon, California and Hawaii,…