Hypothesis
We think our submarine will travel 7 feet in 15 seconds. Speed equals distance divided by time. 7/15= .46 feet per second (fps). This is with the cone shaped nose. We think our submarine will travel at a speed of 2 feet in 15 seconds. 2/15= .13 fps.This is with no nose.

Our submarine might not work if the propellors spin in the air.