Hull fouling is world shipping’s biggest preventable cause of excess fuel consumption and avoidable Greenhouse Gas emissions.
This paper explores four KPIs operators can follow and identifies a single Rule #1 to optimise hull cleaning.
GreenSteam’s Rule #1 combined with automated push notifications allows vessel operators to reduce fouling - derived fuel wastage by around 40% (1)
Applied across the industry this could amount to an annual reduction in CO2 emissions of 40m MT (2) and an industry wide net payback of $1.0bn/year (3)
(1)For vessels, 1/MR tanker, 2/Handysize bulker, 3/Capesize bulker from 1.4 – 3.0 years, accumulated bunker waste from fouling was 1,714 MT (from 53 – 411 MT/year). Simulation following Rule #1 reduced fouling derived fuel wastage in MT by 42-48%.
(2)Assume 50,000 vessels trading 220d/year with 30MT/d propulsion consumption = 330m MT per year. GreenSteam clients (25 clients, multiple vessels) average fouling waste was 10% from DISCOVER trials, which is 33m MT of fuel per year applied to the world fleet. This translates to around 100 m MT of CO2 emissions. Rule #1 saves 40% = 40m MT CO2 per year.
(3)Average net payback from Rule #1 implementation is ± $20,000 per year (vessels 1-3, Appendix 9). Across 50,000 vessels this amounts to a net annual cost reduction of $1bn per year.