At this past year's Olympic Worlds in Perth, Australia, it looked like the medal races were held in the harbor entrance. At any minute, I half expected a 50 foot sport fisherman to barrel through the course full speed. Here is the video of the Finn class medal race (first round only).
And who can forget the 49'er medal race at the 2008 Quingdao Olympics. The Danish team, who led in the standings, broke their mast before the start, raced back to shore, borrowed the Croatian 49'er, made it to the starting line just in time to make it an official start, finished in some wild and woolly conditions, and survived several days of hearings to be declared the Gold Medalists.
Add to that race was the absolute carnage on the course (he's up, he's down, he's up again) as the World's elite 49'er sailors couldn't make it all the way downwind without going over.
Video with German?? (see note below) commentators. (The word, "Krashboombang", fits this race to a tee.)
A comment was left that this is not German - which could very well be - as I demonstrate a sad trait of most Yanks, uno language skills and an appalling lack of any useful knowledge of any other languages. Apologies if I have this completely wrong - I could guess again and say Danish - but it would still be a guess.