Crab,
With reference to your comment that the Sea King has a far greater range than the S92, even without removing extra kit:
The S92 has a still air radius of action of 250 nm with 30 minutes on scene, 10% contingency and IFR minimum landing fuel. And that is without removing any extra kit. We can also remove kit as quickly as you can to give an even better range.
What is the Sea King RoA with equivalent time on scene?
Regards,
Calli