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HULL INPUTS
Waterline Length
Lwl
Waterline length at draft
m
Length Between Perpendiculars
LBP
T
Waterline Breadth
Bwl
Waterline breadth at draft
m
Draught
T
m
Block coefficient
Cb
Insert Known value or adjust if displacement is known
T
Displacement
Δ
T
Midship area
B2
Midship sectional area upto draft
m2
Surface Area
Sf
m2
Speed
Vs
Kn
LCB From Aft Perpendicular
m
Transom Area
At
m2
Bulb Section Area
Abt
Cross section area of Bulbous bulb upto draft
m2
Bulb Height
hb
Submerged height of bulbous bow
m
Bulb Draft
Tf
m
Angle of Entrance
ie
deg
Diameter of Propeller
Dp
m
Pitch of Propeller
Pp
m
Propeller Efficiency
ηp
APPANDAGES & WINDAGE INPUTS
Select to include
Bow Thruster
Sm
_{1}
Wetted Area,
0 if not provided
m²
Lref
_{1}
Wetted Length,
0 if not provided
m
Select to include
Bilge Keels
Sm
_{2}
Wetted Area,
0 if not provided
m²
Lref
_{1}
Wetted Length,
0 if not provided
m
Select to include
Propulsion Thrusters
Sm
_{3}
Wetted Area,
0 if not provided
m²
Lref
_{1}
m
Select to include
Skeg
Sm
_{4}
Wetted Area,
0 if not provided
m²
Lref
_{1}
Wetted Length,
0 if not provided
m
Select to include
Tunnel thrusters
Sm
_{5}
m²
Lref
_{1}
Wetted Length,
0 if not provided
m
Hull Frontal Area
Sf
_{hull}
Section area between draft and depth of hull
m
Superstructure Area
Sf
_{su}
Section area of superstructure
Shaft Inclination
Deg
Stern Shape
Please Select
Pram Gondola
V shape
Normal
U shape Hogner
RESULTS
Frictional Resistance
Rf
mt
Appendage Resistance
Rapp
mt
Wind Resistance
Raa
mt
Wave Making Resistance
Rwa
mt
Transom Resistance
Rtr
mt
Towing Resistance
Rt
mt
Ra
mt
Towing Power
Pt
Kw
Hull Efficiency
ηH
Propeller Efficiency
η0
Relative Rotative Efficiency
ηR
Correction Thrust Vector
Rotary Power
Pd
Kw
Shaft Power
Ps
Kw
Break Power
Pb
Kw
PARAMETER CHECKS
L/B ratio
L / B
B/D Ratio
B / D
B/T Ratio
B / T
T/D Ratio
T / D
Volume Cf
D / L3
Finesse
L / 3√D
KB/T Ratio
KB/T
KG/D Ratio
KG/D
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