225 Vs 92
Severe financial penalties would be incurred by any operator unable to provide daily helicopter support to the offshore companies, therefore why place all your eggs in one basket and plumb for a single type platform.
By buying more than one platform type, operators reduce exposure to any penalties in the event that one type was grounded.
As with all platforms, it depends on where you are sat and who’s paying as to the best option. I don’t suppose those being carried out to the platforms care too much about anything other than safety and comfort, whereas the operator looks at through-life-costs and performance.