500N
They did deploy in Hercs but as previously discussed that isn't an option for the NH-90 which somewhat limits their usefulness in the region unless you hire an Antonov or beg/borrow/steal a C-17.
If you have talked with the crew re: range and endurance then you are in a better position than me, I was merely taking an educated guess from previous experience that it would be a chuffing long way. The NHI and AW websites give some very promising figures however in my experience the real world will be a long way from the manufacturers hype.
I don't want to come across like I am beating down on this helicopter in any way, I am not and I would genuinely like to see it do well as I believe (despite its rocky start) that it still has a lot of potential. What does seem ridiculous though is buying it to replace a helicopter that has served all over the pacific with no way of getting it to those same locations.