I understand the criticm of the movie, and the factual errors it within the movie. But I am hot sure this was suppose to be a bio or a factual portrayal of facts, just a movie.
Also, things that are not in the right context makes something real to be fiction or "creative license".
I'm sure the boat makers life is much more than made out in this Mobster movie". There is a documentary, here on Prime that has an interview of the man this movie is based on... It is called "Operation Odessa", which is about the buying of a Soviet Sub. I won't give any spoilers, but it is an interesting story, and true. Also, one of the better movies on Prime.
Just look at it as just a form of entertainment, and you will enjoy this better, also the fore mentioned movie will give people a bit of context. Thanks