When looking for alternative words to express the concept of shipowners, there are several options to consider. One possibility is "vessel operators," which may be used to describe individuals or companies that manage and oversee the operation of ships. Another option is "ship managers," which typically refers to individuals or organizations that handle the day-to-day operations of a vessel, including crew management, maintenance, and repair. Other potential synonyms for shipowners might include "shipping companies," "maritime operators," or "fleet owners." Ultimately, the choice of wording will depend on the specific context and audience, but these alternatives can help to add variety and clarity to written or spoken communication about the maritime industry.