Advanced PBCF

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5% Fuel-Savings as Inventor's Pride

Advanced PBCF is launched by the pioneer of ESD with the 30 years of experience in all over the world.

  • Launched in May 2017
  • More than 150 orders (as of 2019 Feb)
Advanced PBCF
Design comparison
Design comparison

With extensive optimization and refinement of the fin shape, the advanced PBCF improves propeller efficiency 2% compared to the conventional type.

Improved Effect
Improved Effect

Effect of PBCF has been improved, such as reducing resistance by eliminating the hub vortex, increasing thrust with the ground effect, and gives the fins a strong push in the same direction as the main propeller rotation.

Advanced PBCF – Proven Effect on Actual Vessels –

Confirmed approx. 5% improvement in fuel savings on the modern eco-ship.
(additional +2% compared to the conventional type)

Effect of Advanced PBCF
Conventional vs Advanced

Experience of Afloat Installation

If it is possible to adjust the trim and lift propeller boss above the water level, there is no need for waiting PBCF installation until next dry docking.

Many PBCF have been installed on various type of ships at afloat condition.
Evaluating the effect on PBCF with 3 sister VLCCs.

In a case of afloat installation, the improvement can be seen obviously since there is no modification other than PBCF.

We perform voyage data analysis of before/after PBCF installation as our service.

Combined Effect of PBCF and Other Energy Saving Devices

The effect of energy saving was confirmed to increase in combination with advanced PBCF and other energy saving devices.

Persistent Efforts as the Original Inventor

By the simulation of full scale ship wake flow at the model test, the energy saving effect of PBCF in full scale can be confirmed.

Confirmed more than 4% improvement at the model test using the simulated propeller inflow in the real ship.

Without PBCF
Without PBCF
With PBCF
With PBCF

Reference :
Investigation on Full Scale Performance of the Propeller Boss Cap Fins (PBCF), Full Scale Ship Performance, RINA, 24th - 25th October 2018, London, UK

Contributing to the Marine Environmental Protection by Underwater Noise Reduction

Confirmed the reduction of underwater noise by the tank test with advanced PBCF (abt. 5 dB).
The first energy saving device certified by Port of Vancouver as a noise quieting technology.

The hub-vortex cavitation can be seen in the red circle which is one of the main cause of underwater noise from ships.
It is confirmed that the hub-vortex cavitation was disappeared by installing PBCF.

In PBCF equipped condition, the underwater radiation noise was confirmed to be reduced
by around 5db in range from 100 to 1000kHz.

Participated in Marine Environmental Protection Program Run by Green Award Foundation as an Incentive Provider.

https://www.mol.co.jp/pr/2019/19012.html

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