The Baltic Dry Index, Wikipedia https://en.wikipedia.org/wiki/Baltic_Dry_Index
The Baltic Dry Index (BDI) is issued daily by the London-based Baltic Exchange. The BDI is a composite of the Capesize, Panamax and Supramax Timecharter Averages. It is reported around the world as a proxy for dry bulk shipping stocks as well as a general shipping market bellwether.
The Harpex https://www.harperpetersen.com/harpex
The HARPEX (HARPER PETERSEN Charter Rates Index) is published by HARPER PETERSEN and reflects the worldwide price development on the charter market for container ships. The HARPEX was originally developed in 2004 data accumulated since 2001, adjusted in 2011 and 2017 in response to clients and users. The Charter Rates are assessed weekly for 6-12 months fixture periods on the basis of actual weekly fixtures reported and our own market assessment.
The Baltic Exchange https://www.balticexchange.com/en/index.html
The Baltic Exchange (incorporated as The Baltic Exchange Limited) is a membership organisation for the maritime industry, and freight market information provider for the trading and settlement of physical and derivative contracts.
Global Supply Chain Pressure Index (GSCPI) https://www.newyorkfed.org/research/policy/gscpi#/overview
Our goal in constructing the Global Supply Chain Pressure Index (GSCPI) was to develop a parsimonious measure of global supply chain pressures that could be used to gauge the importance of supply constraints with respect to economic outcomes.