HII (NYSE:HII) and HD Hyundai Heavy Industries (HHI), two of the world's leading shipbuilders across multiple classes of ships, signed a memorandum of understanding (MOU) today to explore opportunities to collaborate on accelerating ship production in support of defense and commercial shipbuilding projects. The signing ceremony took place in HII's booth at Sea Air Space, the largest global maritime expo in North America, and was attended by HII Executive Vice President and President of Ingalls Shipbuilding Brian Blanchette and Won-ho Joo, chief executive of the naval & special ship business unit at HHI.