Well its all we have right now in the public domain so we can use it but be mindful of the possible problems
As for anyone on the platform seeing something I'd have thought it unlikely - especially at night anyone working will be inside or heads down at their work. Better bet might be any safety or supply vessel in the area
But unless there was a fire it would just be a dark piece (s) of metal so not likely. Should be easier in daylight
Should be able to find the FR failry quickly - this should be a lot faster than the AF crash to resolve