So for offshore ops, you can operate down to 250m vis for your rig departure (presumably not at night) and fly a PC1 profile to TDP before transitioning?
In vis of 250m as you transition into forward flight, are you looking at the visual horizon (oh no there isn't one in 250m vis) or the AI? How are you legally able to do this if you have a min speed on instruments of 50kts (unless there is a 50kt headwind)?
Your visual references as you leave the rig are the mist in front of you or the sea surface below you - in what way is that VMC or VFR? The comedy of 'clear of cloud in sight of the surface'?
It would appear the whole 50 kts VminI is given a stiff ignoring - something I find surprising in our rule-bound and litigious society.