Jan 14, 2016 Off Comments in Laser Cutting by

Building a warship is no small task. Fortunately, BAE Systems has is down to a fine science, and they made a four-and-a-half minute video that takes us inside their Scottish shipbuilding plants. The British defense contractor recently earned a $530 million contract to build three offshore patrol vessels for the Royal Navy.

Step one? Cut massive steel sheets for the hull. To do this, BAE uses a computer-guided plasma torch after mapping out the size and shape of the cut. It’s hot enough that cuts need to be made underwater to cool the steel while keeping it from warping, and to prevent molten hot steel from splattering all over the place.

The plasma cutting machine makes its appearance just after the one minute mark, but make sure to check out the rest of the video to see massive segments of the 90-meter warships being constructed and transported.

Read more: Cleveland Ohio Laser Cutting: The Best Part of Building a Warship? Using a Plasma Laser to Cut Steel