Over-simplification Crab. I do not know the details of this part of the contract but I suggest that there is likely to be chargeable training and non-chargeable training. One affects the other of course (just as training a SAR Force guy for a captaincy that at another provider you wouldn't need produces training hours for 3 other guys.)
The block charge forms roughly 80% of costs and the contractor will provide trained crews. Contractor's problem. No charges. Not in the "1.5hrs"?
Upkeep is a different issue and there could well be different flavours and different charges.
Is that how it is?
Somebody in here must have experience of recent contracts with similar issues. How do these things normally work?