The bow tends to climb as the bow wave approaches Hull speed (lifting the front half of the boat on the wave angle), and the aft tends to sink (increasing the waterline area, and drag forces).

but for the same range, you need less fuel, so it reduces Emission and if you increase range because of lower fuelburn it reduces Emissions too overall

A tankfull of fuel will produce the same volume of reactants no matter how long between refills.

@@santyclause8034 lets look at Research-Papers from frontiersin and ship-technology: Boat emissions vary significantly at different speeds. Here are some key points based on that research: Reducing speeds across shipping Vessels has been shown to make a substantial contribution to effective short term measures for reducing greenhouse gas (GHG) emissions. A modest 10% speed reduction across the global fleet has been estimated to reduce overall GHG emissions by around 13%. A 20% reduction in speed would cut greenhouse gases but also curb pollutants such as black carbon and nitrogen oxides. This speed limit would also cut underwater noise by 66%. When ships travel more slowly they burn less fuel, which means there are also savings in black carbon, sulphur, and nitrogen oxides. In conclusion, slower vessel speeds, which increases btw. the Range of a Vessel, can significantly reduce GHG emissions and other environmental impacts. Let´s take a real life example of a 73ft (lwl) Steel hull full displacement Yacht with 165 mT Displacement, equipped with twin Cummins QSM 11 350HP marine Diesel Engines. The Max Speed is 11 Knot - Cruising Speed is 9 Knots ... at Max Speed (11 Knots), this Vessel burns 130l/h on 100% Engine Load, which equtes to a roughly 2200nm Range. If you drop the Engine Load to 50%, you reduce your Speed only at 20% to 9 Knots and burn only 67l/h, which increases your Range to 4500nm. If you decrease Your Engine Load by 50% - you also decrease your ghg-Emissions by around 20%. The Kicker comes, if you shut down one Engine and run the remaining Engine at around 51% Load - which is around 8,5 Knots, this drops your Fuel consumption to 47l/h and increases your Range to around 5000nm by decreasing your ghg-Emissions by around 30% overall ... so, the tankfull Fuel will NOT produce the same volume of ghg-emissions no matter what ...

Y’all are stupid 😊

This has got to be the dumbest comment I've read in a while. So you are saying that a car that gets 15 mpgs, improves its efficiency to 20, or 22 mpgs...is of no benefit to emissions although it burns less fuel to achieve the same work. Ffs. You must be a modern-day college grad. No wonder our diesel technology is so messed up. We could easily have doubled the efficiency of modern diesels, yet with people that think like you. We burn more diesel yet add Def fluid to the combustion. Smh.

Yeah maybe something like a bow that extends downwards to form something that looks like an axe bow

Dear Mickey, no, on a semi-displacement hull we recommend to install the Hull Vane solution: kzbin.info/www/bejne/mIS0h6qVeJV1qKc Foil Assist is for planing hulls.

Hi Bruce, could you send an e-mail to info(a)hullvane.com with the maximum speed of the boat, as well as your cruising speed and (if you have them) some pictures of the hull?

Hi DC-600, press C during the video and subtitles will appear.

- higher top speed - lower RPM at cruising speed - lower fuel consumption - less noise - suppressed wake Check our website for more information.

Give us a call, or send us an e-mail ;)

Dear Rob, did you watch the explanation in the video? Kindly also view the other videos on our channel. The purpose of Hull Vane is not to lift the vessel at the aft (even though that happens and is beneficial on many ships). The purpose is to reduce the overall resistance. You can clearly see this in the reduction of the stern wave (waves are energy, when a ship makes less waves, it consumes less energy). Hull Vane has very little in common with the 100% hydrofoiling applications on US navy patrol boats, Russian ferries and America's Cup sailing boats. Different kind of ships (in weight especially), different location of the foil, different goal and different working principles.

What is the length of those fishing vessels?

@@hullvanebv2550 24m but I saw on the website that the vane works from 8kn so they might go too slow for that.