Resistance
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Parameters
Type of Vessel
Bulker
Tanker
Container
Trawler
Block Coefficient (C
B
)
Interval for Speed Range slider
Length Of Waterline (m)
Midship Coefficient (C
M
)
Speed Range
Length Between Perpendiculars (m)
Waterplane Area Coefficient (C
W
)
Breadth (m)
Density (T/m
3
)
Draft (m)
Kinematic Viscosity (m
2
/s)
Design Velocity (knots)
Half Angle of Entrance (deg)
Displacement (t)
Bulbous Bow
Select Method
Methods
Holtrop and Mennen
Oortmersen
Additional Parameters:
Holtrop & Mennen
Draft Aft (m)
Draft Fwd (m)
Afterbody Shape
U
Normal
V
Wetted Surface Area- Appendages (m
2
)
Immersed Part of Transverse Area (m
2
)
LCB(% +/-Aft/Fore of 0.5(LBP or LWL))
Transverse Area Above The Keelline (m)
Centre of Transverse Area (m)
Additional Parameters:
Oortmersen
LCB from Forward Perpendicular (m)
Appendages
Appendages
Section
Values
Area (m
2
)
Rudder behind Skeg (1.5-2.0)
Rudder behind Stern (1.3-1.5)
Twin-Screw Balance Rudders
2.8
Shaft Brackets
3.0
Skeg (1.5-2.0)
Strut Bossings
3.0
Hull Bossings
2.0
Shafts (2.0-4.0)
Stabilizer Fins
2.8
Dome
2.7
Bilge Keel
1.4
Bow Thruster
C
BTO
Diameter