Charterparty Clause Mechanics is a domain of 6 specified calculator concepts on the build roadmap for this site. This article is the reference side of that domain: what the subject is, which instruments govern it, and how the quantities relate to each other.
It is a stub. The full article will be written from primary sources. The roadmap that identified this domain carries traffic and revenue estimates that are explicitly unvalidated, so they set no editorial priority here.