Grainy photo of the "angled deck" markings painted on the Royal Navy otherwise straight deck light carrier HMS Triumph (R16) for tests in 1952. These initial trials were quickly followed by the modification of the USS Antietam (CV-36) to a true angled deck configuration and both the USN and the RN were off to the races with the concept.
![HMS Triumph angled deck markings.jpg HMS Triumph angled deck markings.jpg](https://www.airwarriors.com/community/data/attachments/40/40989-9648e97cca888228a11a1e313a3dd2e3.jpg)
![HMS Triumph angled deck markings.jpg HMS Triumph angled deck markings.jpg](https://www.airwarriors.com/community/data/attachments/40/40989-9648e97cca888228a11a1e313a3dd2e3.jpg)