What is the launch weight of the Sting Ray?

The launch weight of the Sting Ray is correctly identified as 265 kg. This specification is crucial in understanding the operational capabilities and design of the Sting Ray, which is an anti-submarine torpedo utilized by the Royal Air Force and other naval forces. Knowing the launch weight helps to inform about the torpedo's range, speed, and the type of launch platforms that can effectively deploy it. The other options represent weights that do not align with the verified specifications for the Sting Ray, making them inaccurate for this context.