A regatta
Everybody.
Many people have sailed many boats and ships over the years. I would need more information, such as what specific boats, and whether or not you are referring to a boat race, and - if so - which one, before I could even begin to answer this question.
in the river thames
80 mph
Thousands, for many years there was a ferry service across the Thames
Rowing boats used in competitive races, such as those in the Oxford-Cambridge Boat Race, typically measure about 20 to 25 feet (approximately 6 to 7.6 meters) in length. These boats are designed for speed and efficiency on the water, accommodating various crew sizes. The specific length can vary depending on the type of race and the class of the boat used.
The ratio of people to boats is 3:1
Americas Cup. Tall Ships. Fastnet Race. There are many regattas where lots of races take place for various classes of boats.
4 boats
there are 48 boats in the Bahamas
what do you mean How many boats were damaged or sunk