When it comes to clothing, what matters most is that it prepares you for emergencies, not catwalks
In case you haven't noticed from the boat shows and magazine ads, the proper yachtie must be properly attired. I suppose this trend started in the days when Sir Thomas Lipton wore finely tailored apparel as he bashed about on his Shamrock with British royalty.
Maybe it began much earlier. I seem to remember movies of Cleopatra reclining high up on her "barge," dressed in attire that accentuated certain attributes, even though it wouldn't have been suitable for bending over and picking up an oar. (Or maybe it would.)