Attention Cap’n Doug. The expression “aargh” is used in Pirate language to express the emotions of anger, horror , rage or just plain frustration. None of which have to do with the successful completion of a productive and satisfying job or eating a great meal, etc. The eating of great meal Pirate’s expression of appreciation is to let out a loud belching, burping sound.
A grunting, gutterally inflected, grunted, low Mmmrrrgh type of sound accompanied with a bit of positive up and down head nodding is one of the expressions used to indicate satisfaction of a completed job.
A woman should not have to mansplain this stuff to you. Neanderthal language comes naturally to most pirates.
For instance a reply of “aargh” to what I just now wrote is an entirely appropriate use of that written version of the sound.