Several of the blog items have used the oce package. The official version of this can be installed from within R by

install.packages("oce")

and more up-to-date versions can be installed using the devtools package, which is itself installed with

install.packages("devtools")

after which installing the latest development version of oce is accomplished with

library(devtools)
install_github('ocedata', 'dankelley', 'master')
install_github('oce', 'dankelley', 'develop')

Note that the ocedata package does not need to be updated frequently, as it only updated when new datasets are added to oce. The official version of oce is only updated every few months, but the branch named develop (used above) may be updated several times a day, if the author is adding new features or fixing bugs.

For more on oce, see the oce development site and the online manual for the package.