Lieutenant Commander Jim Phillips will form a civil partnership with Marcus Rutter on Saturday aboard HMS Warrior, according to Reuters.
Phillips told Portsmouth's The News newspaper that his sexuality had never interfered with his job as a weapons engineer officer.
"I think most people are mature and educated enough for it not to be an issue," he said. "I'd say a significant proportion of my colleagues know I'm gay but there have been no problems or prejudices at all. It's been work as usual."

