| Draft (T) |
Height of the water line from the lowest point of the ship. |
Length |
| LWL |
Length of the hull measured between the front perpendicular and the aft
perpendicular along the waterline. |
Length |
| BWL |
Width of the hull measured along the waterline. |
Length |
| CoG |
Center of gravity of the hull. |
Point |
| CoB |
Center of buoyancy of the hull. |
Point |
| Volume |
Immersed volume of the ship. |
Volume |
| Displacement |
Weight of the water displaced due to the immersed volume of the ship. |
Mass |
| WPA |
Water plane area. It is the area of the hull at the intersection with the water
plane. |
Area |
| WSA |
Wetted surface area. It is the total surface area of the hull and appendages
below the waterline. |
Area |
| Ix |
Moment of inertia relative to the x-axis. |
Inertia |
| Iy |
Moment of inertia relative to the y-axis. |
Inertia |
| Mt |
Transversal metacenter. |
Point |
| Ml |
Longitudinal metacenter. |
Point |
| BMt |
Transversal metacentric radius of the ship. It is the vertical distance between
the center of buoyancy and the transversal metacenter. BMt = Ix/Immersed
Volume |
Length |
| BMl |
Longitudinal metacentric radius of the ship. It is the vertical distance
between the center of buoyancy and the longitudinal metacenter. BMl = Iy/Immersed
Volume |
Length |
| LCF |
Longitudinal center of flotation. It is the distance of the center of flotation
from either of the perpendiculars or the mid-ship, along the waterline. |
Length |
| LCB |
Longitudinal center of buoyancy. It is the distance of the center of buoyancy
from either of the perpendiculars or the mid-ship, along the waterline. |
Length |
| VCB |
Vertical center of buoyancy. It is the distance of the center of buoyancy from
the keel, along the centerline of the ship. |
Length |
| KMt |
Transversal metacentric height. It is the distance between the keel and
Mt. |
Length |
| KMl |
Longitudinal metacentric height. It is the distance between the keel and
Ml. |
Length |
| GZ |
Distance between G (CoG) and Z. |
Length |
| Ax |
Maximum cross-sectional area of the immersed volume of the ship in the
longitudinal direction. |
Area |
| Cb |
Block coefficient Cb = Volume/(LWL*BWL*T) |
- |
| Cp |
Prismatic coefficient Cp = Volume/(LWL*Ax) |
- |
| Cwp |
Waterplane coefficient Cwp = WPA/(LWL*BWL) |
- |
