Since “I don’t know” is not an answer I can accept, I instead chose to offer the reasons why I don’t know.

Derek hasn’t really had much opportunity to explore this aspect of life. He’s been on a ship from the day he was born, and the men on the Illinois were family in every sense of the word – they raised him and are the ones who shaped him into the man he has become.
What little he gleaned from Buford he doesn’t like to reflect too deeply upon for obvious reasons, but it has instilled a quiet repulsion in him for most activities in this regard when they involve other men – and most especially when the other man in question has any kind of power over him.
There have been a few periods in which the crew entertained ladies aboard the ships during peacetime, that he got some action in – but here it was rather rushed and a bit confusing. There wasn’t a lot of time to explore, or really figure out what he liked and what he didn’t. While he classes these experiences as completely pleasurable, he doesn’t really remember the finer details of them to provide much insight.