Construction of HMS Prince of Wales, the second of two new aircraft carriers for the U.K. Royal Navy, has moved forward with the docking of two of the ship’s largest hull sections – Lower Block 02 and Lower Block 03. The movement of the blocks into the dock at Rosyth marks the beginning of the ship’s assembly phase and comes only days after Prime Minister David Cameron announced that HMS Prince of Wales will enter into service, ensuring that the U.K. will always have one aircraft carrier available.