I wouldn't work 15 days on 13 off but would consider 8 on 6 off but pay would have to be around £100,000 to make me put up with the boredom of being on standby with only routine training to look forward to. It is no fun living on a rig, so as there aren't many night qualified SAR Capts about who would want this job the pay should be high as market forces kick in.
Ally