7x12 hours. Three weeks on, three weeks off.

The only guys I knew who did that worked in the marine industry out on the ships. That you?

In a prior life I worked marine SAR and this was 7x12, two on, two off. It was a great schedule for a young person and I sometimes kick myself for leaving it. But the government kept cutting the budget. A floating combo firetruck, ambulance, and towtruck was one thing; a floating hearse was something else again.

The standard rotation in the offshore industry is 7x12 3 on, 3 off. My "rotation" was phone call at 0200, call up a helicopter and out to the rig until whenever.