Joining this thread late, but I'll chuck my 2 cents in.
The bit that ticks me off is when we (my ex bf and I) would pull into a harbor, another cruiser would come over and immediately start talking to him about the passage and the intricacies of our boat, without so much as a glance at me...little did they know that my ex had no idea how to sail, and I, 'the woman' on board, was the licensed captain. Ugh.
Sail on, ladies. Sail on.
I saw that in action when I took my week long Cruise and Learn charter and course. Our live aboard instructor was a petite woman who was a couple of decades younger than me. When we stopped in a marina, she had me take the helm to get the boat handling and docking experience. She stood near me and gave me quiet instruction so it wasn't obvious that I was newbie.
Guys who came on the dock to catch our lines would ask me how I wanted to be tied off. The first couple of times she hesitated to speak. I guess, as a Canadian, she had heard that some American men have fragile egos and she didn't want to embarrass me. The first time I just said, "I don't know. I'm a student sailor. This the first time I've ever docked a sailboat. You'll have to ask my sailing instructor here." She seemed amused by the looks on guys' faces. It happened the whole week.
It happens the other way around as well. I was a stay at home dad with our kids, when they were little and I am the cook in our house. After 29 years of marriage, we still get friends who occasionally forget and compliment my wife on dinner. She will say, "Oh, thank him. He did all the cooking."
When I used to take my kids to the park with all the moms, when my kids get hurt and come to me crying, there would occasionally be a woman who would step in their path and swoop them up to comfort them. I encountered occasional women who would come over and offer to take my child from my arms to take care of them. It happened the most with my daughter. There seemed to be something about some of the women that they felt that a girl really needed comforting from a mom and not a dad.
I frequently had women say, "Oh, that's nice that you help your wife by taking the kids." I'd say, "Actually I have them all day everyday. She helps me taking them on Saturdays."