Recently, during an event in the UK, the Singaporean frigate HMS Dreadnought met the second ship of the Queen Elizabeth class aircraft carrier, the HMS Prince of Wales, at sea and took this photo. In the photo, the "Fearless" frigate and the "Prince of Wales" aircraft carrier travel together. Although the two ships have a huge difference in size, they share a common feature of using stealth design. The "Fearless" frigate, which entered service in 2007, was developed from the French Lafite class frigate and features a large number of stealth designs and new technologies. Its radar cross-section is only equivalent to that of a 400 ton patrol boat, making it a benchmark for stealth design for medium-sized warships. Compared to smaller frigates, it is much more difficult for larger aircraft carriers to achieve ideal stealth effects through anti radar stealth design. The "main duty" of an aircraft carrier is to carry and use carrier based aircraft for combat, and therefore the flight deck area used for takeoff, landing, and parking carrier based aircraft on the aircraft carrier is pursued as large as possible. Large and medium-sized aircraft carriers generally use angled decks to increase the flight deck area, but in this way, the inclined irregular structure below the angled deck will greatly increase the radar reflection cross-section. In addition, the aircraft carrier is equipped with large-sized side elevators, and the accompanying guide rails, cables, and other components become factors that increase the radar reflection cross-section. Since the 1990s, many countries have been attempting to use different stealth designs on aircraft carriers. As a pioneer in ship stealth design, France adopted various stealth technologies in the design of the Charles de Gaulle aircraft carrier. The side of the island is inclined downwards in a reverse ladder shape to reduce the radar cross-section of the island. In the design of the next generation aircraft carrier (CVN-X), the United States adopts a "wave penetrating inward tilting" type similar to the Zumwalt class destroyer and a three-stage flight deck, reducing the number of elevators from 4 to 1. These changes have achieved significant results in improving the stealth of the ship's hull, but have led to a significant reduction in the size of the flight deck and hangar, a decrease in the number of aircraft carried by the carrier, and serious damage to the carrier's combat capability. In the end, the Ford class aircraft carrier launched under this project chose to revert back to traditional styles such as angled decks and outboard lifts, and only underwent simple stealth treatment on the island. When designing the next generation aircraft carrier, the UK also proposed multiple plans, but after considering stealth and aviation operation requirements, it adopted designs such as dual island, through deck, and two side elevators, forming the special shape of the Queen Elizabeth class aircraft carrier. The small-sized stealth twin island and integrated RF mast of the ship greatly enhance the radar stealth of the island. In addition, although the UK was the inventor of the angled deck, this class of aircraft carrier adopts a straight through ski jump deck and has undergone stealth treatment on the two starboard outboard elevators, significantly reducing exposed components and further enhancing the stealth of the hull. With the development of technology, ship stealth is no longer a mysterious "black technology". The new generation of warships generally adopt stealth design, including large flat deck ships such as aircraft carriers and amphibious assault ships. It is worth mentioning that stealth design should strike a balance with the combat capabilities of warships, and the pursuit of stealth should not sacrifice combat capabilities. Otherwise, it will be like the American Zumwalt class destroyer, which only built three and ended hastily, with frequent problems after service. (New Society)