Photo: Pacific Basin Shipping
“One of the world’s largest bulker operators, Hong Kong headquartered Pacific Basin Shipping Limited, is to apply a sustainable graphene-based propeller coating, XGIT-PROP, across its entire (40 ship–Chuck) fleet…In a fuel efficiency study conducted by Stolt Tankers in 2022, it was demonstrated that XGIT-PROP has the potential to reduce fuel consumption by up to 4%.”
Might be worth a look. Could extend range and would also probably be quieter.
This makes me wonder if we are tapping into the knowledge base of our Marine Inspectors to ask what innovations they are seeing on the commercial side that might be applicable to our cutters.
Chuck Hill's CG Blog 
Graphite Innovations & Technology of Canada is also using Graphene Nano Coatings on Ship’s Screws…
That, combined with the Dutch Hull Vane technology, which itself allows fuel savings of 5% to 15%, could be a winner.