1. Has the S92 a greater radius of action than the Seaking or even the S61
2. Will the S92 ever be able to go as far as the Seaking without compromising cabin space?
Answer to 1: yes if you fit auxiliary tanks (according to the manufacturer's published information).
Answer to 2. no (see 1).
But the third question is: with the aux tanks fitted, is there enough space in the S92 cabin to get the job done?
Anyone able to cast light on that? Remember that a Sea King at 240 nm (the practical limit of its RoA if you are to do anything more than scoop and run once on scene) can lift about 12 survivors max on a good day. Can you get 12 survivors and an aux tank in an S92 cabin - I'm sure the beast will be space not weight limited? Or, worst case, can you jettison the tank once it's empty to make more space?
Sven