Straight Up Kayaks

why dont canoes completely sink when filled with water?

this question is in regards to physics

Public Comments

1. They are usually made of fiberglass now. Unless it's a brick, it won't sink!
2. Ya if it aint made of fiberglass or ABS plastic its still gonna sink!! Been there done that!!
3. it's the material that it's made of and how it was engineered to hold two air pockets at either end of the canoe.
4. Wooden canoes dont sink because hey wood floats! Steel canoes dont sink cause manufacturers usually place a styrofoam block in the end pieces to keep them afloat.
5. it does depend on wat the conoe is made out of but it is also important on how the conoe was designed. wood... an ordinary conoe would sink if it was filled w/ water all the way. this is becus the total weight of the conoe is now actually the conoe's weight + the water that is inside it. we can make this weight er call this total weight "T". now wen the value of T out weighs the value of the bounyant force which is upheld by the water from underneath from the conoe's surface tension, it will begin to sink. now.. just becus i said, the water in the conoe dont get the wrong idea n think.. the deeper it goes the heavier it will get. it's not the water on top it's just dependant opon the water INNNNNNNNNN the conoe. :) does this help at all?