Sailing in modern well-crewed yachts does not require massive physical strength so there should be no division between men and women. The race is between people. Gender is irrelevant.
Where more muscle makes a difference, e.g. in archery, there is a case for having separate events for men and women so that some women can win. Even so, many women are better archers than many men because there is skill and concentration involved too, in which women and men are equals.
Misaligned holes in flat pack garden furniture
To go through chemo therapy or choose not to?