It is called an anchor. It is shaped like a letter w, and it is made of steel and the boat cannot resist the weight, therefore anchors are used in water so the boat does not move.
It is a heavy device that gets thrown off a boat or ship into the water to hold the vessel in place
The water movement behind the boat is called the wake. The water movement behind the boat is called the wake.
Removing water from a boat
To overturn a boat in the water is to capsize it. Hope that helps
the name of a boat that goes underwater is called a SUBMARINE.
Because it means something that can float in the water.
over 10,000 boat sails are thrown away, but this is usually due to damage.
It will rise of course. The metal that is thrown overboard has mass, and displacement.
Cleats
a under water boat hmm... titanic (kidding) submarine
The powerboat swerved as he opened the throttle, and his passenger was thrown from the boat.
The science is called "displacement". If the shape of the boat allows the amount of the boat in the water to be less weight than the water it displaces it will float. If the amount of the boat in the water weighs more than the water it displaces it will sink.