Every number on this site is one of three things: something we watched happen (live AIS off our own recorder), something a named body counted (the US Census Bureau), or something a model guessed — and a model’s guess is never quoted as a measurement. Two recorders built on different machinery measure the same reality and are checked against each other; where they stop agreeing, one of them is wrong, and we say so in public. This page is everything that follows from taking that seriously: what we found, how we checked it, what we refuse to publish, and what we got wrong.
Published by Mrigank Singh, who runs an India–US freight forwarder. That is an economic interest in this subject, stated here rather than buried: findings that flatter that business get more scrutiny before publication, not less.