Boats are desined with enough displacement to stay a float but minimizing surface area to decrese the effects of friction if it is desined for speed.

6 errors

1. "desined" should be spelled "designed"

2. "displacement" should be spelled "displacement" or "buoyancy"
3. "stay a float" should be written as "stay afloat"
4. "decrese" should be spelled "decrease"
5. "desined" should be spelled "designed" (repeated error)
6. "desined" should be spelled "designed" (repeated error)

1. "Desined" should be spelled as "designed".

2. "Stay a float" should be written as "stay afloat".
3. "Decrese" should be spelled as "decrease".
4. "Desined" appears to be a repetition error. It was already mentioned in error #1.
5. "Surface area to decrese" should be written as "surface area to decrease".
6. "Desined" reappears again. It was already mentioned in errors #1 and #4.