Yes - at one point the ship is almost going under, then the next moment, it's as though the ship has only just hit the iceberg!
Being both a 'Titanicologist' and a Media Production student, I know how hard it is to film something on this scale - but I do agree with you, it does look TOO much like the Queen Mary.
I think around that part of the film where Beesly and Goodwin are talking about class distinctions there was a fog - this wasn't true of the real voyage; it was clear sailing from when they left Southampton, until around the evening after the Carpathia picked up the survivors - and even then there was no fog, just rain and a little wind.
As with all Titanic films, there are many nitpicks - but this was the last film about the disaster before they found the wreck in 1985 - a lot of other people mentioned in films produced before 1985 that the sinking was fake because the ship didn't break apart - but this was purely because nobody knew at that time the ship had broken apart - as is the case with 'Raise the Titanic'
Might I suggest watching 'Atlantic'? That was about the disaster, and filmed quite close the period of the centure the ship sank; that has a lot of errors in research, far more than this had.
Even on the uncut version (which I've just watched), there are ridiculous scenes like the deck going almost vertical (in what looks like just a camera being tilted on its side) followed by a cut to a colourised scene from ANTR of the ship at about a 35 degree angle. It's all very silly, and we still have scenes of people being squirted with off-camera hoses.
Your name is of no importance and you live in the pipe in the upstairs water closet.
Well, it *was* a TV movie from the 70s. TV movies then aren't what they are now. They had shoe-string budget and clearly the budget was spent on getting a starry cast.