# The Effects of the Boat’s Hull Design on Speed and Maneuverability

## School Name

Spring Valley High School

Physics

Non-Mentored

3rd Place

## Abstract

The lack of speed and maneuverability of boat hulls are one of the possible reasons why thousands of cargo ships are at lost at sea. This investigation’s purpose was to find the best hull for cargo ships, in respect to speed. It was hypothesized that the flat bottom hull would do the best in terms of stability and round hull would do the best in terms of speed. The three most common hulls, round, flat, and V, were tested. Three model boats of the same mass were used during experimentation. First, displacement was tested by putting each model in a small water tank, and measuring how much the boat sunk naturally. The round boat displaced 1603 ml of water, which was the highest compared to any other boat hull. Then, each model was put into a bathtub with the rope connected to the boat that was hanging on a hook with a weight on it. Then, the boat was pulled back to the end of the bathtub and released. The weight brought the boat to the other side of the tub. The ANOVA [F(2,57)=49.82,p<0.001] result indicated that the null hypothesis was rejected. The Tukey test results indicated that there was a significant difference between the round hull and all others. The flat hull did best in terms of speed and maneuverability. The other hulls failed to hold cargo since water got into the models.

## Location

Founders Hall 210 B

## Start Date

3-30-2019 10:15 AM

Oral and Written

## Group Project

No

COinS

Mar 30th, 10:15 AM

The Effects of the Boat’s Hull Design on Speed and Maneuverability

Founders Hall 210 B

The lack of speed and maneuverability of boat hulls are one of the possible reasons why thousands of cargo ships are at lost at sea. This investigation’s purpose was to find the best hull for cargo ships, in respect to speed. It was hypothesized that the flat bottom hull would do the best in terms of stability and round hull would do the best in terms of speed. The three most common hulls, round, flat, and V, were tested. Three model boats of the same mass were used during experimentation. First, displacement was tested by putting each model in a small water tank, and measuring how much the boat sunk naturally. The round boat displaced 1603 ml of water, which was the highest compared to any other boat hull. Then, each model was put into a bathtub with the rope connected to the boat that was hanging on a hook with a weight on it. Then, the boat was pulled back to the end of the bathtub and released. The weight brought the boat to the other side of the tub. The ANOVA [F(2,57)=49.82,p<0.001] result indicated that the null hypothesis was rejected. The Tukey test results indicated that there was a significant difference between the round hull and all others. The flat hull did best in terms of speed and maneuverability. The other hulls failed to hold cargo since water got into the models.