A sea captain is a person responsible for commanding and navigating a ship. However, there are many other synonyms for "sea captain" that offer a more descriptive insight into this role. A ship commander, skipper, master mariner, seafarer, or sailor are just a few examples. An admiral, commodore, or fleet commander suggest higher positions or ranks within naval operations. In contrast, a fisherman, whaler, or navigator may also denote sea-faring expertise but in a more specialized capacity. Additionally, the term sea dog or old salt often refers to a seasoned and experienced seaman. Overall, these synonyms all refer to individuals who are experienced in the operation and navigation of ships at sea.