Hours worked??

If having an accident or loss of Sub, it might start to matter.

Insurance would look to find a way out of their obligation and might be delighted hearing of these circumstances.

..What do you think of a company that uses a 12 hour flex shift…..and asks the 2 man ROV crew to do a 21 hour shift

Are you referring to the client in these circumstances or your actual employer? Presumably its a rig job and your seen as "standby" working as required…… unfortunately a few long shifts after being seen as standing-by is common. Avoid these dive as required type jobs would be my advice, if your not happy.

If 24 hour cover is required and known about in advance surely 2x 2 man teams are required for safety.

Of course most clients will try and go for the cheaper option if companies allow it to happen. If they do choose the cheaper option the ROV company should stand by their employees and keep safety paramount, providing 12 hours per day.

Just one ex A sleep deprived or overworked employee operating a crane/winch/aframe with a heavy/£million rov on it. Not good for anyone where safety is concerned.

TOFS was the answer i was looking for.

Just my 2p.

Edit: its a loaded question because everyone knows it shouldn’t occur!

It’s not right, we all know that, but if this is happening, then you need to look after yourself and your team.

Because, if, the unfortunate were to happen, then YOU (assuming you are the responsible party) will be reamed and you wont have a leg to stand on, in the dock if you may have allowed this situation to occur.

I have done it more times than I care to remember, because I thought I was doing the right thing…’for the good of the job’, ‘get the job done’, feeling guilty if I had been on Facebook and dreaming on Pistonheads for 12 hours, looking on Ebay at things that would not normally interest me at home…. but hey, get over it, some shifts/hitches you get lucky, some you don’t.
Make the most of it.

IMO I would initially air your concerns with the office in writing, if no go then stop. Only wen the ROV is sat on the deck for a few hours on DT when it could be working, will people possibly listen.
Get a copy of your comapny work contract.

Also you need to work WITH your client. Explain the situation and your concerns.

Lastly, if this doesn’t work maybe follow it up with a written Client indemnity document temporarily passing your responsibilities to them if fatigued people must work outside of their companies contractual obligations.

COMMUNICATE!

If that doesn’t work, then try the Samaritans 😉