Classic energy-saving device reaches Guinness world record

Courtesy of MOL Tech

Posted on January 3, 2022 12:47 AM by

The maritime executive

An energy-saving device developed by MOL three and a half decades ago, which was attached to the propeller of ships, has entered the Guinness world records as a worldwide bestseller.

The Japanese Mitsui OSK Lines (MOL) announced that the Propeller Boss Cap Fins (PBCF) sold by its subsidiary MOL Tech have been certified by Guinness World Records as a “best-selling energy-saving brand for ship hangers (cumulative)”. By the end of December 2020, more than 3,500 ships had been equipped with the device.

The PBCF is an energy-saving device that is attached to the propeller. It breaks up the hub vortex created behind the rotating propeller, resulting in energy savings and greater fuel efficiency, thus helping to reduce emissions for the shipping industry.

The device was jointly developed in 1986 by MOL, West Japan Fluid Engineering Laboratory Co. and Nakashima Propeller Co. and came on the market in 1987, forming behind a rotating propeller.

Analyzes have shown that equipping a ship with PBCF leads to energy savings of three to five percent and a corresponding reduction in CO2 emissions. MOL Tech estimates that expanded use of the device has contributed to a cumulative reduction in CO2 emissions of 46 million tons worldwide.

Further advantages are a reduction in propeller torque, reduced vibrations in the stern, less underwater noise and reduced rudder erosion.

Sales have grown steadily since its inception, with orders of 1,000 in 2006, 2,000 in 2011, and over 3,000 in 2015. In 2017, an updated PBCF was launched that offers further improvements in energy saving. This year, the cumulative sales of PBCF have exceeded 3,800, with the number of vessels equipped with the device exceeding 3,600.

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