Calculate additional pressure resistance due to immersed transom (Rtr) (kN).

calcHMImmersedTransomRes(
  shipSpeed,
  breadth,
  Cwp,
  maxDraft,
  At,
  seawaterDensity = 1.025
)

Arguments

shipSpeed

Ship actual speed (vector of numericals, m/s) (see calcSpeedUnitConversion)

breadth

Moulded breadth (vector of numericals, m)

Cwp

Water plane area coefficient (vector of numericals, see calcCwp)

maxDraft

Maximum summer load line draft (vector of numericals, m)

At

Transom area (vector of numericals, m^2) (see calcAt)

seawaterDensity

Sea water density. Default = 1.025 (g/cm^3). Can supply either a vector of numericals, a single number, or rely on the default

Value

Rtr (vector of numericals, kN)

References

Holtrop, J. and Mennen, G. G. J. 1982. "An approximate power prediction method." International Shipbuilding Progress 29.

See also

Examples

calcHMImmersedTransomRes(seq(1,5,1),32.25,0.91,13.57,22.2,seawaterDensity=1.025)
#> [1] 2.104356 7.732846 15.858604 25.454766 35.494465