PBCF (Propeller Boss Cap Fins)

PBCF has been on the market since 1987, when it was jointly developed by MOL, West Japan Fluid Engineering Laboratory Co., Ltd., and Mikado Propeller Co (the predecessor to Nakashima Propeller). To date, over 3,300 vessels have installed the device, which offers fuel savings (of 3-5%) by eliminating the hub vortex generated behind the rotating propeller and improving propeller efficiency.

[@gummel82]

Nice now I can finally buy a PBCF for my vessel

[@itwerkzglobal1]

Excellent and Good product design...congratulation from Eco Surface Drives Malaysia...

[@UraTrowelie]

It's cool to see the new technology they're coming out with.

[@jakobwagner7097]

...1987...

[@GNX157]

Why don’t the propeller makers just integrate this into their design? Surely the licensing fee would be cheaper than a separate add on? When does the patent expire on this design?

[@craigrmeyer]

Not faulting anyone, but I'm surprised by how flat and non-curved the fins on the PBCF are. That's an "intuitive surprise".

[@parameswaran6045]

Most valuable information for me❤❤❤❤❤❤❤

[@mehdikh9742]

It was excellent and very helpful and instructive👏👏👏🙏🙏🙏

[@unnikrishnannairkrishnannair.]

The axial displacement is having parabolic change in poer along the radious the hub must be 70 percent in diameter to get efficience more than 50%

[@peckerwood780]

Looks easy enough to make your own version of it.

[@smokeyray5017]

As helpful as this may be, someone has been thinking about this way to much.

[@mooredelira]

at 13 minutes, the graph shows "FOC Saving (ton/Month)", but the narrator said "tons per year".

[@mades642]

既に世界で3000隻の船舶に採用された実績、 仕組みと凄いもんですね。

[@unnikrishnannairkrishnannair.]

I am dasigning 50 hp axial flow dewatering pumps I can say that efficiency of this propulsion is arround 60%

[@conantdog]

Brilliant device 👍

[@slevinshafel9395]

4:00 to mee look like aeronautic motors. use the back rotor to move the front one.

[@nj2033]

I think the data shows a 1% fuel saving... Which is still alot to be fair...

[@scottstewart5784]

if the payback periods are legit, and there's no downside, it's a no-brainer

[@SikterEfendi]

Here's a prop for your prop :)

[@namechane1758]

a sharrow prop with the apex clipped off

[@welkcubnairb1478]

Interesting

[@ahmetkucukosman571]

Is that usefull for pitch propeller ? Could you inform me ?

[@FromGamingwithLove0456]

@William Smith 1:35

[@TribalGlobe]

Start the video with the benefits, not self congradulations.

[@cedrickmolato]

0:05

[@David-yy7lb]

The added weight of that PBCF is useless, you as a captain will never see the benefit of that device on a vessel that's dam near a 1/4 mile long and weight millions of tons, just design a better propeller

[@stephendoherty8291]

The extra weight of a BCF on any large tanker would be negligible. The prop already has a prop boss weight penalty. A 5% saving on any large vessel is a considerable fuel saving, which is the ships most expensive operating cost - of course the captain wont benefit as he does not own these boats. I doubt cruise ships will benefit as most use azimuth rotating propellors now vs a single screw as presented. I see these BCFs now being sold by other firms (perhaps under license). I do wonder why we're not seeing designs that eliminate post screw vortexes that add so much resistance and performance loss. Subs have been looking to eliminate them for years (to counter noise and vibration impact)

[@grindergaming4572]

That music is trash

[@mediocreman6323]

Sorry I can't watch this. The advertiser-voice, the advertiser-music… I just cannot watch this!