## How do you calculate the buoyancy of a boat?

Multiply your boat’s volume, 54, by the amount of the boat you want underwater — for example, 50 percent, or 0.50. Multiply the result, 27, by 62.4, the weight of 1 cubic foot of fresh water. The result, 1,684.8 is the number of pounds of buoyant force keeping half of your boat out of the water.

**How do you calculate floatation lines?**

Calculate the volume of water displaced by the floating buoy, as follows: 30 pounds of water / [62.4 pounds / ft-cubed] = 0.481 ft-cubed. Calculate the amount of the buoy’s volume remaining above the surface of the water, as follows: 2 – 0.481 = 1.519 ft-cubed.

### How do I calculate my boat draft?

Divide the total volume of water displaced by the surface area of the boat’s deck. In the example you would divide 5.47 by 120 (the surface area of the deck) and get 0.046 feet. Add together the result from Step 1 and the result from Step 7 to obtain your boat’s draft. In the example, you would add 3 to 0.046.

**How do you calculate water displacement on a boat?**

The volume below the float plane times the weight of water (fresh is 62.4 and salt is 64.) equals the displacement of the boat. The displacement of the boat minus the boat weight divided by five is the maximum safe load….

Section | Area | Multiplier |
---|---|---|

11 | A11 | 2 |

12 | A12 | 4 |

13 | A13 | 1 |

#### What is the waterline length of a boat?

A vessel’s waterline length is the length of a ship or boat at the level where it sits in the water. The LWL will be shorter than the length of the boat overall as most boats have bows and stern protrusions that make the LOA greater than the LWL.

**How do you calculate submerged volume?**

The displaced volume has an equal weight of the object. Thus: by dividing the less dense object by the denser fluid displaced, the percentage volume of the object that is submerged, which is equal to the volume of displaced water, is determined. Subtracting 100 from this give the percentage that floats.

## How do you calculate water displacement?

To find the amount of water displaced, students should subtract the initial level of the water (60 mL) from the final level of the water.

**What is the formula for draft?**

Final Draft Calculation – Fore and Aft Mean (FAm) = (Fcd + Acd) / 2 = (10.796 + 11.196) / 2 = 21.992 /2 = 10.996 M. – Mean of Mean Draft (MM) = (Mcd + FAm / 2) = (10.965 + 10.996) /2 = 21.961 / 2 = 10.9805 M. – Quarter Mean (MMM) = (MM + Mcd) /2 = (10.9805 + 10.965) /2 = 21.9455 /2 = 10.97275 M. = 10.973 M.

### How can displacement be calculated?

The average velocity of the object is multiplied by the time traveled to find the displacement. The equation x = ½( v + u)t can be manipulated, as shown below, to find any one of the four values if the other three are known.