Train me, don’t mistreat me
You were doing so well until those final lines ...
"Bigger is not always better it seems, especially when dealing with old school crew that think commercial is where its at. Perhaps he should go back on commercial ships and let clean and organized people run yachts."
I am not pleased to hear that you have to endure working for an insecure bully. He may be that way because that is how he was trained, or he might be that way because he is fundamentally incompetent or just "one ship stupid" which means he learned how to run that boat but doesn't know why and can't risk having to explain it.
Having a commericial background or coming up through the yacht hawespipe has nothing to do with your problem or his. Incompetent people come from all sources. Your blaming his behaviour on him coming to yachting from a commercial background is as ignorant as his alleged unwillingness to mentor you. It sounds like your own attitude toward him is not helping your cause either.
What kind of information do you want "hand fed" to you? Is it something that a reasonable chief would expect a competent assistant to bring to the engine department? Mentoring does not mean spoon feeding fundamental engineering knowledge to people who claim the title and salary of a marine engineer.
I don't mean to attack you or blindly support the chief but those last lines do beg the question of how the other side of this story would read.