Humorous picture thread

[catalac]

 

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[Couch]

I think its meant to be more as an aid rather than primary source of propulsion.

If ship's travel at (just a guess) 20 knots and there is sufficient wind to overcome that, if a sail capable of 2 knots on those big ships, the engines would only require the energy for 18 knots and let the sail do the rest where appropriate. Could be a huge fuel savings.

I'm a naval architect by trade, own and operate boats, family has lengthy maritime history ....Horizon Arctic - offshore support that just located the Titan sub - is currently docked in front of my house loading chain.
There's a couple of routes - one way - where winds are consistent enough to maybe offset / assist propulsion to a small degree but it's mostly window dressing. You'll need vessels dedicated to those routes only which become costly too. Reducing emissions in marine is a much more difficult matter mostly because it's currently the most cost effective/ efficient way to move goods - far cheaper than truck or rail - on a manageable time frame. Delays are expensive and have a knock on effect in cargo facilities.
One of the biggest hurdles for marine is that there's no great regenerative opportunities...takes power to start moving and takes power to slow / stop unlike wheeled road vehicles or trains.
Most likely ship ops will continue to be conventional power for quite a while with more elaborate exhaust scrubbers and cleaner fuel requirements with a whole lot of gimmicks on the side. Wing spars being most probable candidate.
Better antifouling and "slippery" bottom coating advancements will likely contribute the most gains.


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[lilduke]

Maybe they should have nuclear powered cargo ships.

Works on the big aircraft carriers

 

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