LR sees surge in propeller retrofits but uptake still low
Aft-hull retrofits can be responsible for major efficiency gains, shipowners say (Source: Odfjell)
Global demand for propeller retrofits and other propulsion energy‑saving devices (ESDs) has jumped four‑fold since 2020, yet only 1.74 % of ships in service carry the most popular option, the rudder bulb, classification society Lloyd’s Register (LR) reports.
High‑efficiency propellers can trim fuel up to 10%, rudder bulbs about 3.5%. For vessels on order the picture is brighter: 8.42% will leave the yard with at least one ESD, and 17% of bulkers will sport rudder bulbs. Container ships increasingly combine bulbs, stator fins and boss‑cap fins, each set to appear on more than a tenth of the segment’s orderbook.
IMO CII rules and Europe’s ETS and FuelEU Maritime are the main drivers; LR reckons a 20% fuel cut could save an Aframax tanker USD 3 million in compliance costs over a decade. “Our research reveals that propeller and ESD retrofits offer ship operators a proven pathway to significant fuel savings, extended regulatory compliance, and meaningful emissions reductions,” said Claudene Sharp-Patel, LR Global Technical Director. "However, successful propeller and ESD retrofits require far more than simply bolting on additional equipment. They demand sophisticated analysis, careful integration with existing systems, and ongoing performance management. Our role extends throughout the entire retrofit journey, from initial assessment through long-term optimisation."
