The first contract to build the Landing Craft Infantry vessels was officially signed with George Lawley & Sons Shipbuilding Corporation (Neponset, Massachusetts, United States) and New York Shipbuilding Corporation (Camden, New Jersey, United States) on 3 Jun 1942, and production began in the following month, and shortly after the design was designated "Landing Craft, Infantry (Large)", or LCI(L) or even simply LCI for short. The first prototypes were launched, LCI-1 and LCI-209, and were tested in Sep and Oct 1942. In late 1942, a group of eight LCIs made their first journey into the Atlantic Ocean from Norfolk, Virginia, United States to Bermuda Islands; they weathered Force 4 winds, proving themselves seaworthy, though they also rolled badly. 299 of the LCI-1 sub-class landing craft were built; 45 in-progress LCI-1 sub-class craft were canceled in order to speed along the improved LCI-351 sub-class. 211 of them were transferred to the British Royal Navy under the Lend-Lease program.