ShipPowerModel is an R package that contains functions for modeling the propulsive power of commercial marine vessels (CMV). It contains four different power models:

  • Propeller law load factor model
  • Admiralty formula load factor model
  • Holtrop-Mennen resistance model
  • Kristensen resistance model

This package can be used in conjunction with vessel information and emission factors to estimate CMV air emissions.

Getting Started

These instructions should get ShipPowerModel installed and running within your installation of R. See the vignettes and library documentation for how to use this package.

Prerequisites

Building and installing this package and its documentation requires R version 3.5 or greater and the following packages:

  • devtools
  • testthat
  • knitr
  • rmarkdown
  • ggplot2

Installation

You can install this package directly from github using the following command:

devtools::install_github(repo = "USEPA/Marine_Emissions_Tools",
                         subdir = "ShipPowerModel",
                         build_vignettes = TRUE
                        )

Authors

  • Isabela Brown
  • Michael Aldridge
  • Daniel Bizer-Cox