ONR Tumblehome Ship (ONRT)
Hull data and conditions are as follows:
Main particulars 
Model scale 
Full scale 

Length of waterline  L_{WL} (m)  3.147  154.0 
Maximum beam of waterline  B_{WL} (m)  0.384  18.78 
Depth  D (m)  0.266  14.5 
Draft  T (m)  0.112  5.494 
Displacement  Δ  72.6 kg  8507 ton 
Wetted surface area (fully appended)  S_{0} (m^{2} )  1.5  NA 
Block coefficient (CB)  ∇ /(L_{WL}B_{WL} T)  0.535  0.535 
LCB  LCB (m) aft of FP  1.625  NA 
Vertical Center of Gravity (from keel)  KG (m)  0.156  NA 
Metacentric height  GM (m)  0.0422  NA 
Moment of Inertia  K_{xx}/B  0.444  0.444 
Moment of Inertia  K_{yy}/L_{WL}, K_{zz}/L_{WL}  0.246  0.25 
Propeller diameter  D_{P} (m)  0.1066  NA 
Propeller center, long. location (from FP)  x/L_{WL}  0.9267  NA 
Propeller center, lateral location (from CL)  ±y/L_{WL}  0.02661  NA 
Propeller center, vert. location (below WL)  z/L_{WL}  0.03565  NA 
Propeller shaft angle (downward positive)  ε (deg.)  5  NA 
Propeller rotation direction (view from stern)  inward  inward  
Maximum rudder rate  35.0 deg./s 
Model speed 

U (m/s)  1.11 
Fn  0.20 
Requested computations 

Case # 
3.9 
3.12 
3.13 

Wave 
Calm^{*} 
Head^{*} 
45^{°}, Beam, 135^{°}^{*}, 

Condition 
Freerun 
Freerun 
Freerun 

Attitude 
FR_{all} 
FR_{all} 
FR_{all} 

Validation Variables 
Thrust, torque, prop fact, s&t, Model point 
Thrust, torque, rpm, motion, speed loss, speed loss 
Thrust, torque, rpm, motion, speed loss, speed loss 

EFD provider 
IIHR 
IIHR 
IIHR 
"Mandatory" cases (denoted by ^{*}) 
For ONRT the calm water and head waves should be computed first. 
Hull Attitude Definitions: 
Hull Geometry (with gaps above the rudders) Hull Geometry (without gaps above the rudders) Propeller Geometry + Propeller Open Water Characteristics(IIHR) 