SNAME Boat Design Competition Calculations REV-C

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Introduction You will be judged on several items that this workbook will help you calculate - namely: - Total weight - Gravity centers (LCG, VCG, TCG) - Waterline and Trim - Displacement and Centers of Buoyancy - Stability The light blue cells are calculations done for you (formulas already entered). Enter your data into the light yellow cells. 1) Begin by choosing a Hull Type from the drop down list at the top of the 'Judging Criteria & Weights' page. Hull types include Monohull, Catamaran, Trimaran, Outrigger (Por Outrigger (Starboard). Remember - once you have selected a hull, or if you change hull types, to press the "Select" button to the right of the drop down list. a) Monohull – A single hull boat with all loads and structure attached to the one hull. b) Catamaran – A boat with two hulls, the hulls being a mirror of each other across the boat’s overall centerline. The two hulls of a catamaran are the same size, and hav same baseline and FMP. c) Trimaran – A three hull boat in which the Port/Starboard hulls can be of a different size/shape than the Center(Main) hull. The Port and Starboard hulls are mirrors of other similar to a catamaran. d) Outrigger – A boat with two hulls, the Center(Main) hull and a Port or Starboard (Outrigger) hull. The outrigger hull can have a different size/shape than the Center h 2) Select the “Visual Examples” tab to view examples of the hull configurations and a How To for the hull type you chose. 3) Follow the directions given on the “Visual Examples” tab which will tell you how and where to enter the information needed to complete the calculations. 4) Once all of the information is entered according to the “Visual Examples” tab, the results will be displayed on the tab labeled “Results”. a) Mean Draft is the average vertical distance from the waterline to the keel. • If your boat is multi-hulled then the draft is measured from the waterline to the lowest keel. YOU NEED TO CHANGE THE VALUE IN THE 'MEAN DRAFT' FIELD UNTIL THE DIFFERENCE BETWEEN THE WEIGHT AND DISPLACEMENT EQUALS ZERO. AT THAT POINT, YOUR BOAT IS BALANCED. THERE ARE DIRECTIONS NEAR THIS CELL TO HELP YOU DECIDE WHAT VALUES TO TYPE IN THAT CELL. b) Trim is the difference between the forward draft and the aft draft. • A positive trim means the stern of your boat is sitting lower in the water than the bow, know as Aft Trim. c) Freeboard is the distance from the waterline to the deck edge of the lowest hull. • A minimum of 6 inches of freeboard is required at any point on the boat. This requirement is to help ensure that your boat will not be in danger of taking on water a sinking. d) Freeboard at Mean Draft is the amount of freeboard your boat has without including the trim. • The cell containing the measurement will display a green background if there is at least 6 inches of freeboard. If there is less than 6 inches of freeboard the cell background will change to red and indicate “Insufficient Freeboard!”. • In this instance you will need to create more freeboard by increasing the difference between the boat’s deck edge and the design waterline (i.e. the boat needs t higher in the water). The following methods can be used to increase freeboard: (i) Fatten the Hull lines to displace a greater volume of water. This will add displacement faster than weight but don’t forget to recalculate your weights.

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Boat Design Calculation

Transcript of SNAME Boat Design Competition Calculations REV-C

Page 1: SNAME Boat Design Competition Calculations REV-C

Introduction

You will be judged on several items that this workbook will help you calculate - namely: - Total weight - Gravity centers (LCG, VCG, TCG) - Waterline and Trim - Displacement and Centers of Buoyancy - Stability

The light blue cells are calculations done for you (formulas already entered). Enter your data into the light yellow cells.

1) Begin by choosing a Hull Type from the drop down list at the top of the 'Judging Criteria & Weights' page. Hull types include Monohull, Catamaran, Trimaran, Outrigger (Port) & Outrigger (Starboard). Remember - once you have selected a hull, or if you change hull types, to press the "Select" button to the right of the drop down list. a) Monohull – A single hull boat with all loads and structure attached to the one hull. b) Catamaran – A boat with two hulls, the hulls being a mirror of each other across the boat’s overall centerline. The two hulls of a catamaran are the same size, and have the same baseline and FMP. c) Trimaran – A three hull boat in which the Port/Starboard hulls can be of a different size/shape than the Center(Main) hull. The Port and Starboard hulls are mirrors of each other similar to a catamaran. d) Outrigger – A boat with two hulls, the Center(Main) hull and a Port or Starboard (Outrigger) hull. The outrigger hull can have a different size/shape than the Center hull.

2) Select the “Visual Examples” tab to view examples of the hull configurations and a How To for the hull type you chose.

3) Follow the directions given on the “Visual Examples” tab which will tell you how and where to enter the information needed to complete the calculations.

4) Once all of the information is entered according to the “Visual Examples” tab, the results will be displayed on the tab labeled “Results”. a) Mean Draft is the average vertical distance from the waterline to the keel. • If your boat is multi-hulled then the draft is measured from the waterline to the lowest keel.

YOU NEED TO CHANGE THE VALUE IN THE 'MEAN DRAFT' FIELD UNTIL THE DIFFERENCE BETWEEN THE WEIGHT AND DISPLACEMENT EQUALS ZERO. AT THAT POINT, YOUR BOAT IS BALANCED. THERE ARE DIRECTIONS NEAR THIS CELL TO HELP YOU DECIDE WHAT VALUES TO TYPE IN THAT CELL.

b) Trim is the difference between the forward draft and the aft draft. • A positive trim means the stern of your boat is sitting lower in the water than the bow, know as Aft Trim. c) Freeboard is the distance from the waterline to the deck edge of the lowest hull. • A minimum of 6 inches of freeboard is required at any point on the boat. This requirement is to help ensure that your boat will not be in danger of taking on water and sinking. d) Freeboard at Mean Draft is the amount of freeboard your boat has without including the trim. • The cell containing the measurement will display a green background if there is at least 6 inches of freeboard. If there is less than 6 inches of freeboard the cell background will change to red and indicate “Insufficient Freeboard!”. • In this instance you will need to create more freeboard by increasing the difference between the boat’s deck edge and the design waterline (i.e. the boat needs to sit higher in the water). The following methods can be used to increase freeboard:

(i) Fatten the Hull lines to displace a greater volume of water. This will add displacement faster than weight but don’t forget to recalculate your weights. (ii) Increase the height of your deck edge by putting additional plate all the way around your original deck edge. Remember to redo your offsets and weights. (iii) Reduce your boat’s weight by removing unnecessary structure.

e) Freeboard at Lowest Point is the amount of freeboard at the location where your boat sits lowest in the water. • This measurement takes into account the trim of your boat. If your boat has any trim then there will be a location that has less freeboard than the Mean Draft freeboard. • The cell containing the measurement will display a green background if there is at least 6 inches of freeboard. If there is less than 6 inches of freeboard the cell background will change to red and indicate “Insufficient Freeboard!”. • If your boat has 6 inches or more of freeboard at the mean draft, but not in the trim condition consider using one of the following methods to create the additional needed freeboard:

(i) Moving load items (e.g. propulsion motor and steering box) or payload to reduce the trim. (ii) Move structure away from the low point to reduce the trim. (iii) Remove weight from the area where the low point is located. (iv) Reshape the hull(s) by fattening the hull lines to raise the low point.

Remember in all of these cases to redo your offsets and/or weights as you make changes.

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Input Weights and Critical Characteristics of Your Boat - This page will be used along with the 'Results' page when judging your submittal

Variable DescriptionHull Type Monohull <-- You must press this button after you select a hull type

B = 0.00 ft Boat maximum beam (width) L = ft Boat length at the Design Waterline - NOT the total lengthT = ft Mean draft (Design Waterline height)Trim = in Trim (inches) between bow and stern (trim down by the stern is positive) Weight = 0.00 lb Total WeightVCG = 0.00 ft Vertical Center of Gravity (above lowest baseline) LCG = 0.00 ft Longitudinal Center of Gravity (from most forward bow) TCG = 0.00 ft Transverse Center of Gravity (from centerline of Center Hull (Overall boat's centerline for Catamaran))

ft GM

Hull Transfer Distance(s) / Relative Positions

Terminology:

Longitudinal Hull Transfer Distance = the longitudinal distance between the forward most point of the Center hull to the forward most point of the Offcenter hull.(Aft positive)

Transverse Hull Transfer Distance = the transverse distance between the centerline of the center hull to the centerline of the offcenter hull.

Do Not Enter Value, Should Display 0 0.00 ft (Always a positive value)

Do Not Enter Value, Should Display 0 0.00 ft (Positive = Side hull's forward-most point is aft of the Center hull's forward-most point)

Do Not Enter Value, Should Display 0 0.00 ft (Positive = Side hull baseline(s) above the center hull baseline)

WeightsTerminology:VCG = vertical center of gravity (up/down), typically measured "up" from the reference pointLCG = longitudinal center of gravity (forward/aft), typically measured aft from the reference pointTCG = transverse center of gravity (port/starboard), measured from the reference point. Port and starboard should have opposite signs.

Notes:

Hull Item Dimensions Area Weight Density Weight Local LCG

Description (ft) (ft) (lb) (ft) (ft) (ft) (lb-ft) (ft) (ft) (ft) (lb-ft) (ft) (ft) (ft) (lb-ft)

Starboard 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Port 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Starboard 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Port 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Starboard 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Port 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Starboard 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Port 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Starboard 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Port 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0

Center 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0TOTAL 0.00 0.00 0 0.00 0 0.00 0

Please fill in the values in yellow below. The remainder are filled in automatically once you enter you boat's offsets.These values will be used in the judging of your vessel.

GMT =

The location of the Offcenter Hull(s) with respect to the Center Hull. This only applicable to designs with more than one hull. If you are designing a monohull then these values should be zero.

Vertical Hull Transfer Distance = the vertical distance between the baseline of the center hull to the baseline of the offcenter hull.(Up positive, i.e. Offcenter hull baseline above the center hull baseline.)

LOCAL CG's are relative to the hull that the piece is on. GLOBAL CG's are relative to the overall hull. It was done this way so that you could move the hulls around as you design your boat without having to redo everything.

Local VCG

Vertical Hull Transfer Distance

Global VCG Local VCG + Vertical Hull

Tranfer Distance

Global VMOM

Longitudinal Hull Transfer

Distance

Global LCG Local LCG + Longitudinal

Hull Transfer Distance

Global LMOM

LocalTCG

Transverse Hull Transfer Distance

Global TCG Local TCG + Transverse Hull

Transfer Distance

Global TMOM

(ft2) (lb/ft2)

1) Choose which hull the weight item is associated with by selecting the hull from the drop down list to the left of every entry. 2) Make sure you include the weights of all items on the vessel (e.g sand, propeller, motor, etc.), not just the weight of the steel. Calculate the areas of any steel items and use the appropriate density to calculate the weight of these items.3) This spreadsheet will multiply the weight by the centers to calculate the moments in each direction (set up for you already).4) The individual moments are summed in the bottom row and divided the total weight to get the "composite" centers of gravity (set up for you already).5) Any pieces connecting hulls (either for a catamaran or trimaran) should be called out against the "centerline"; even if you don't have a center hull (in the case of a catamaran), so that the transverse centers are correct

F11
Patrick J. Ryan: A deeper draft at the stern than the bow results in trim by the stern (aka…the stern is deeper in the water).
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h = Distance between waterlines (ft) = 0.000.00

Outboard Edge Starboard Hull Station # 0 Outboard Edge Starboard Hull Station # 1 Outboard Edge Starboard Hull Station # 2Waterline SM f(A) Waterline SM f(A) Waterline SM f(A)

# (ft) (ft) # (ft) (ft) # (ft) (ft)1 0.000 1 0.00 1 0.000 1 0.00 1 0.000 1 0.002 0.000 4 0.00 2 0.000 4 0.00 2 0.000 4 0.003 0.000 2 0.00 3 0.000 2 0.00 3 0.000 2 0.004 0.000 4 0.00 4 0.000 4 0.00 4 0.000 4 0.005 0.000 2 0.00 5 0.000 2 0.00 5 0.000 2 0.006 0.000 4 0.00 6 0.000 4 0.00 6 0.000 4 0.007 0.000 1 0.00 7 0.000 1 0.00 7 0.000 1 0.00

Sf(A) = 0.00 Sf(A) = 0.00 Sf(A) = 0.00

Inboard Edge Starboard Hull Station # 0 Inboard Edge Starboard Hull Station # 1 Inboard Edge Starboard Hull Station # 2Waterline SM f(A) Waterline SM f(A) Waterline SM f(A)

# (ft) (ft) # (ft) (ft) # (ft) (ft)1 0.000 1 0.00 1 0.000 1 0.00 1 0.000 1 0.002 0.000 4 0.00 2 0.000 4 0.00 2 0.000 4 0.003 0.000 2 0.00 3 0.000 2 0.00 3 0.000 2 0.004 0.000 4 0.00 4 0.000 4 0.00 4 0.000 4 0.005 0.000 2 0.00 5 0.000 2 0.00 5 0.000 2 0.006 0.000 4 0.00 6 0.000 4 0.00 6 0.000 4 0.007 0.000 1 0.00 7 0.000 1 0.00 7 0.000 1 0.00

Sf(A) = 0.00 Sf(A) = 0.00 Sf(A) = 0.00

Area = 0.00 Area = 0.00 Area = 0.00

Outboard Edge Starboard Hull Station # 3 Outboard Edge Starboard Hull Station # 4 Outboard Edge Starboard Hull Station # 5Waterline SM f(A) Waterline SM f(A) Waterline SM f(A)

# (ft) (ft) # (ft) (ft) # (ft) (ft)1 0.000 1 0.00 1 0.000 1 0.00 1 0.000 1 0.002 0.000 4 0.00 2 0.000 4 0.00 2 0.000 4 0.003 0.000 2 0.00 3 0.000 2 0.00 3 0.000 2 0.004 0.000 4 0.00 4 0.000 4 0.00 4 0.000 4 0.005 0.000 2 0.00 5 0.000 2 0.00 5 0.000 2 0.00

Deck Edge = Height (ft)

HBi HBi HBi

Hbo Hbo Hbo

ft2 ft2 ft2

HBi HBi HBi

B24
There should be an odd number of waterlines
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6 0.000 4 0.00 6 0.000 4 0.00 6 0.000 4 0.007 0.000 1 0.00 7 0.000 1 0.00 7 0.000 1 0.00

Sf(A) = 0.00 Sf(A) = 0.00 Sf(A) = 0.00

Inboard Edge Starboard Hull Station # 3 Inboard Edge Starboard Hull Station # 4 Inboard Edge Starboard Hull Station # 5Waterline SM f(A) Waterline SM f(A) Waterline SM f(A)

# (ft) (ft) # (ft) (ft) # (ft) (ft)1 0.000 1 0.00 1 0.000 1 0.00 1 0.000 1 0.002 0.000 4 0.00 2 0.000 4 0.00 2 0.000 4 0.003 0.000 2 0.00 3 0.000 2 0.00 3 0.000 2 0.004 0.000 4 0.00 4 0.000 4 0.00 4 0.000 4 0.005 0.000 2 0.00 5 0.000 2 0.00 5 0.000 2 0.006 0.000 4 0.00 6 0.000 4 0.00 6 0.000 4 0.007 0.000 1 0.00 7 0.000 1 0.00 7 0.000 1 0.00

Sf(A) = 0.00 Sf(A) = 0.00 Sf(A) = 0.00

Area = 0.00 Area = 0.00 Area = 0.00

Outboard Edge Starboard Hull Station # 6 Outboard Edge Starboard Hull Station # 7 Outboard Edge Starboard Hull Station # 8Waterline SM f(A) Waterline SM f(A) Waterline SM f(A)

# (ft) (ft) # (ft) (ft) # (ft) (ft)1 0.000 1 0.00 1 0.000 1 0.00 1 0.000 1 0.002 0.000 4 0.00 2 0.000 4 0.00 2 0.000 4 0.003 0.000 2 0.00 3 0.000 2 0.00 3 0.000 2 0.004 0.000 4 0.00 4 0.000 4 0.00 4 0.000 4 0.005 0.000 2 0.00 5 0.000 2 0.00 5 0.000 2 0.006 0.000 4 0.00 6 0.000 4 0.00 6 0.000 4 0.007 0.000 1 0.00 7 0.000 1 0.00 7 0.000 1 0.00

Sf(A) = 0.00 Sf(A) = 0.00 Sf(A) = 0.00

Inboard Edge Starboard Hull Station # 6 Inboard Edge Starboard Hull Station # 7 Inboard Edge Starboard Hull Station # 8Waterline SM f(A) Waterline SM f(A) Waterline SM f(A)

# (ft) (ft) # (ft) (ft) # (ft) (ft)1 0.000 1 0.00 1 0.000 1 0.00 1 0.000 1 0.002 0.000 4 0.00 2 0.000 4 0.00 2 0.000 4 0.003 0.000 2 0.00 3 0.000 2 0.00 3 0.000 2 0.004 0.000 4 0.00 4 0.000 4 0.00 4 0.000 4 0.00

Hbo Hbo Hbo

ft2 ft2 ft2

HBi HBi HBi

Hbo Hbo Hbo

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5 0.000 2 0.00 5 0.000 2 0.00 5 0.000 2 0.006 0.000 4 0.00 6 0.000 4 0.00 6 0.000 4 0.007 0.000 1 0.00 7 0.000 1 0.00 7 0.000 1 0.00

Sf(A) = 0.00 Sf(A) = 0.00 Sf(A) = 0.00

Area = 0.00 Area = 0.00 Area = 0.00ft2 ft2 ft2

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h= Distance between waterlines (ft) =0.00

Port Edge Center Hull Station # 0 Port Edge Center Hull Station # 1 Port Edge Center Hull Station # 2Waterline SM f(A) Waterline SM f(A) Waterline SM f(A)

# (ft) (ft) # (ft) (ft) # (ft) (ft)1 1 0.00 1 1 0.00 1 1 0.002 4 0.00 2 4 0.00 2 4 0.003 2 0.00 3 2 0.00 3 2 0.004 4 0.00 4 4 0.00 4 4 0.005 2 0.00 5 2 0.00 5 2 0.006 4 0.00 6 4 0.00 6 4 0.007 1 0.00 7 1 0.00 7 1 0.00

Sf(A) = 0.00 Sf(A) = 0.00 Sf(A) = 0.00

Starboard Edge Center Hull Station # 0 Starboard Edge Center Hull Station # 1 Starboard Edge Center Hull Station # 2Waterline SM f(A) Waterline SM f(A) Waterline SM f(A)

# (ft) (ft) # (ft) (ft) # (ft) (ft)1 0.000 1 0.00 1 0.000 1 0.00 1 0.000 1 0.002 0.000 4 0.00 2 0.000 4 0.00 2 0.000 4 0.003 0.000 2 0.00 3 0.000 2 0.00 3 0.000 2 0.004 0.000 4 0.00 4 0.000 4 0.00 4 0.000 4 0.005 0.000 2 0.00 5 0.000 2 0.00 5 0.000 2 0.006 0.000 4 0.00 6 0.000 4 0.00 6 0.000 4 0.007 0.000 1 0.00 7 0.000 1 0.00 7 0.000 1 0.00

Sf(A) = 0.00 Sf(A) = 0.00 Sf(A) = 0.00

Area = 0.00 Area = 0.00 Area = 0.00

Port Edge Center Hull Station # 3 Port Edge Center Hull Station # 4 Port Edge Center Hull Station # 5Waterline SM f(A) Waterline SM f(A) Waterline SM f(A)

# (ft) (ft) # (ft) (ft) # (ft) (ft)1 1 0.00 1 1 0.00 1 1 0.002 4 0.00 2 4 0.00 2 4 0.003 2 0.00 3 2 0.00 3 2 0.004 4 0.00 4 4 0.00 4 4 0.00

Deck Edge = Height (ft)

HBp HBp HBp

HBs HBs HBs

ft2 ft2 ft2

HBp HBp HBp

B24
There should be an odd number of waterlines
B36
There should be an odd number of waterlines
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5 2 0.00 5 2 0.00 5 2 0.006 4 0.00 6 4 0.00 6 4 0.007 1 0.00 7 1 0.00 7 1 0.00

Sf(A) = 0.00 Sf(A) = 0.00 Sf(A) = 0.00

Starboard Edge Center Hull Station # 3 Starboard Edge Center Hull Station # 4 Starboard Edge Center Hull Station # 5Waterline SM f(A) Waterline SM f(A) Waterline SM f(A)

# (ft) (ft) # (ft) (ft) # (ft) (ft)1 0.000 1 0.00 1 0.000 1 0.00 1 0.000 1 0.002 0.000 4 0.00 2 0.000 4 0.00 2 0.000 4 0.003 0.000 2 0.00 3 0.000 2 0.00 3 0.000 2 0.004 0.000 4 0.00 4 0.000 4 0.00 4 0.000 4 0.005 0.000 2 0.00 5 0.000 2 0.00 5 0.000 2 0.006 0.000 4 0.00 6 0.000 4 0.00 6 0.000 4 0.007 0.000 1 0.00 7 0.000 1 0.00 7 0.000 1 0.00

Sf(A) = 0.00 Sf(A) = 0.00 Sf(A) = 0.00

Area = 0.00 Area = 0.00 Area = 0.00

Port Edge Center Hull Station # 6 Port Edge Center Hull Station # 7 Port Edge Center Hull Station # 8Waterline SM f(A) Waterline SM f(A) Waterline SM f(A)

# (ft) (ft) # (ft) (ft) # (ft) (ft)1 1 0.00 1 1 0.00 1 1 0.002 4 0.00 2 4 0.00 2 4 0.003 2 0.00 3 2 0.00 3 2 0.004 4 0.00 4 4 0.00 4 4 0.005 2 0.00 5 2 0.00 5 2 0.006 4 0.00 6 4 0.00 6 4 0.007 1 0.00 7 1 0.00 7 1 0.00

Sf(A) = 0.00 Sf(A) = 0.00 Sf(A) = 0.00

Starboard Edge Center Hull Station # 6 Starboard Edge Center Hull Station # 7 Starboard Edge Center Hull Station # 8Waterline SM f(A) Waterline SM f(A) Waterline SM f(A)

# (ft) (ft) # (ft) (ft) # (ft) (ft)1 0.000 1 0.00 1 0.000 1 0.00 1 0.000 1 0.002 0.000 4 0.00 2 0.000 4 0.00 2 0.000 4 0.003 0.000 2 0.00 3 0.000 2 0.00 3 0.000 2 0.00

HBs HBs HBs

ft2 ft2 ft2

HBp HBp HBp

HBs HBs HBs

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4 0.000 4 0.00 4 0.000 4 0.00 4 0.000 4 0.005 0.000 2 0.00 5 0.000 2 0.00 5 0.000 2 0.006 0.000 4 0.00 6 0.000 4 0.00 6 0.000 4 0.007 0.000 1 0.00 7 0.000 1 0.00 7 0.000 1 0.00

Sf(A) = 0.00 Sf(A) = 0.00 Sf(A) = 0.00

Area = 0.00 Area = 0.00 Area = 0.00ft2 ft2 ft2

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h = Distance between waterlines (ft) = 0.000.00

Outboard Edge Port Hull Station # 0 Outboard Edge Port Hull Station # 1 Outboard Edge Port Hull Station # 2Waterline SM f(A) Waterline SM f(A) Waterline SM f(A)

# (ft) (ft) # (ft) (ft) # (ft) (ft)1 0.000 1 0.00 1 0.000 1 0.00 1 0.000 1 0.002 0.000 4 0.00 2 0.000 4 0.00 2 0.000 4 0.003 0.000 2 0.00 3 0.000 2 0.00 3 0.000 2 0.004 0.000 4 0.00 4 0.000 4 0.00 4 0.000 4 0.005 0.000 2 0.00 5 0.000 2 0.00 5 0.000 2 0.006 0.000 4 0.00 6 0.000 4 0.00 6 0.000 4 0.007 0.000 1 0.00 7 0.000 1 0.00 7 0.000 1 0.00

Sf(A) = 0.00 Sf(A) = 0.00 Sf(A) = 0.000 0 0

Inboard Edge Port Hull Station # 0 Inboard Edge Port Hull Station # 1 Inboard Edge Port Hull Station # 2Waterline SM f(A) Waterline SM f(A) Waterline SM f(A)

# (ft) (ft) # (ft) (ft) # (ft) (ft)1 0.000 1 0.00 1 0.000 1 0.00 1 0.000 1 0.002 0.000 4 0.00 2 0.000 4 0.00 2 0.000 4 0.003 0.000 2 0.00 3 0.000 2 0.00 3 0.000 2 0.004 0.000 4 0.00 4 0.000 4 0.00 4 0.000 4 0.005 0.000 2 0.00 5 0.000 2 0.00 5 0.000 2 0.006 0.000 4 0.00 6 0.000 4 0.00 6 0.000 4 0.007 0.000 1 0.00 7 0.000 1 0.00 7 0.000 1 0.00

Sf(A) = 0.00 Sf(A) = 0.00 Sf(A) = 0.00

Area = 0.00 Area = 0.00 Area = 0.00

Outboard Edge Port Hull Station # 3 Outboard Edge Port Hull Station # 4 Outboard Edge Port Hull Station # 5Waterline SM f(A) Waterline SM f(A) Waterline SM f(A)

# (ft) (ft) # (ft) (ft) # (ft) (ft)1 0.000 1 0.00 1 0.000 1 0.00 1 0.000 1 0.002 0.000 4 0.00 2 0.000 4 0.00 2 0.000 4 0.003 0.000 2 0.00 3 0.000 2 0.00 3 0.000 2 0.004 0.000 4 0.00 4 0.000 4 0.00 4 0.000 4 0.005 0.000 2 0.00 5 0.000 2 0.00 5 0.000 2 0.00

Deck Edge = Height (ft)

Hbo Hbo Hbo

HBi HBi HBi

ft2 ft2 ft2

Hbo Hbo Hbo

B24
There should be an odd number of waterlines
B36
There should be an odd number of waterlines
Page 10: SNAME Boat Design Competition Calculations REV-C

6 0.000 4 0.00 6 0.000 4 0.00 6 0.000 4 0.007 0.000 1 0.00 7 0.000 1 0.00 7 0.000 1 0.00

Sf(A) = 0.00 Sf(A) = 0.00 Sf(A) = 0.000 0 0

Inboard Edge Port Hull Station # 3 Inboard Edge Port Hull Station # 4 Inboard Edge Port Hull Station # 5Waterline SM f(A) Waterline SM f(A) Waterline SM f(A)

# (ft) (ft) # (ft) (ft) # (ft) (ft)1 0.000 1 0.00 1 0.000 1 0.00 1 0.000 1 0.002 0.000 4 0.00 2 0.000 4 0.00 2 0.000 4 0.003 0.000 2 0.00 3 0.000 2 0.00 3 0.000 2 0.004 0.000 4 0.00 4 0.000 4 0.00 4 0.000 4 0.005 0.000 2 0.00 5 0.000 2 0.00 5 0.000 2 0.006 0.000 4 0.00 6 0.000 4 0.00 6 0.000 4 0.007 0.000 1 0.00 7 0.000 1 0.00 7 0.000 1 0.00

Sf(A) = 0.00 Sf(A) = 0.00 Sf(A) = 0.00

Area = 0.00 Area = 0.00 Area = 0.00

Outboard Edge Port Hull Station # 6 Outboard Edge Port Hull Station # 7 Outboard Edge Port Hull Station # 8Waterline SM f(A) Waterline SM f(A) Waterline SM f(A)

# (ft) (ft) # (ft) (ft) # (ft) (ft)1 0.000 1 0.00 1 0.000 1 0.00 1 0.000 1 0.002 0.000 4 0.00 2 0.000 4 0.00 2 0.000 4 0.003 0.000 2 0.00 3 0.000 2 0.00 3 0.000 2 0.004 0.000 4 0.00 4 0.000 4 0.00 4 0.000 4 0.005 0.000 2 0.00 5 0.000 2 0.00 5 0.000 2 0.006 0.000 4 0.00 6 0.000 4 0.00 6 0.000 4 0.007 0.000 1 0.00 7 0.000 1 0.00 7 0.000 1 0.00

Sf(A) = 0.00 Sf(A) = 0.00 Sf(A) = 0.000 0 0

Inboard Edge Port Hull Station # 6 Inboard Edge Port Hull Station # 7 Inboard Edge Port Hull Station # 8Waterline SM f(A) Waterline SM f(A) Waterline SM f(A)

# (ft) (ft) # (ft) (ft) # (ft) (ft)1 0.000 1 0.00 1 0.000 1 0.00 1 0.000 1 0.002 0.000 4 0.00 2 0.000 4 0.00 2 0.000 4 0.003 0.000 2 0.00 3 0.000 2 0.00 3 0.000 2 0.004 0.000 4 0.00 4 0.000 4 0.00 4 0.000 4 0.00

HBi HBi HBi

ft2 ft2 ft2

Hbo Hbo Hbo

HBi HBi HBi

Page 11: SNAME Boat Design Competition Calculations REV-C

5 0.000 2 0.00 5 0.000 2 0.00 5 0.000 2 0.006 0.000 4 0.00 6 0.000 4 0.00 6 0.000 4 0.007 0.000 1 0.00 7 0.000 1 0.00 7 0.000 1 0.00

Sf(A) = 0.00 Sf(A) = 0.00 Sf(A) = 0.00

Area = 0.00 Area = 0.00 Area = 0.00ft2 ft2 ft2