Wing Sails on modern ships

[DaveC426913]

LNG tankers will not benefit directly from sail unless they are better insulated, since they are fuelled by the LNG that boils off during the voyage.

I don't follow your logic.

Oh, you mean because their fuel is a waste product anyway, so there's no savings to be made off "free"?

 

[Flyboy]

I don't follow your logic.

Oh, you mean because their fuel is a waste product anyway, so there's no savings to be made off "free"?

That’s how I interpreted it. Using the boil-off as fuel makes a lot of sense.

 

[Baluncore]

Using the boil-off as fuel makes a lot of sense.

If sailing could halve the fuel requirement, they would have to double the thickness of the LNG tank insulation.
https://en.wikipedia.org/wiki/LNG_carrier#Reliquefaction_and_boil-off

 

[Flyboy]

Yeah. Unless they’re willing to add a plant to return the boiloff to a liquid state, or add active refrigeration to the tanks, improving the fuel economy of an LNG tanker is kinda pointless. It’s just not economically sound.