It depends on what is falling, how far down the bottom is, and whether the fall is controlled or not.
For example, it's been estimated that it only took Titanic a few minute to fall nearly 3800 meters to the floor of the Atlantic. By contrast, a modern research vehicle took about 2½ hours to make a controlled drop 11000 meters to the bottom of the Challenger Deep.
6 minutes
The deepest dive to the bottom of Atlantic ocean was 10,994 meters deep. It was done by Don Walsh in a submarine and the dive took 4 hours and 47 minutes.
There are a lot of variables that would affect the outcome of this event.
as quick as a flash
How long did it take to cross the Atlantic Ocean in 1902
To the bottom of the ocean! I think the intended destination was New York though.
About how long it would take a cut to heal.
I think it would take a very long time. I think about 82 days.
Tje aanswer I came up with is 1year
it would take about 200,000 years to completely drain into the ocean.
My best guess would be a month
actually, you'd get sucked down under with the boat. the pressure and pull of the water would suck you down and then compress you. sucks, right?