Option C without a doubt, If you landed offshore and shut down only to find that it was a major problem, the logistics of getting another heli to rescue you and engineer etc would be a tricky one. You are closer to base than the rig.... no brainer really.
T4
My sentiments exactly, you cost the company and client more sitting U/S offshore. And thats before you consider the passenger safety side, with recent events people up here (Aberdeen) are watching what we do very closely. A good decision and hopefully one backed up by both your company and your client.
Si