Estimate the center of bulb area above keel line (hb) (m) using the method in Rakke (2016).

calchb(maxDraft)

Arguments

maxDraft

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

Value

hb (vector of numericals, m)

References

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

Rakke, S. G. 2016. "Ship Emissions Calculation from AIS." NTNU.

Examples

calchb(c(13.57,11.49))
#> [1] 5.428 4.596
calchb(13.57)
#> [1] 5.428