Blimp efficiency depends on size, a big one would be on the bottom right. But then some wind would send it tumbling around and it would crash into Jet transport and Horse, rapidly disintegrating as it pulverizes Human on a velomobile against the bottom axis.
curious where lighter than air vehicles and trains end up on there
Blimp efficiency depends on size, a big one would be on the bottom right. But then some wind would send it tumbling around and it would crash into Jet transport and Horse, rapidly disintegrating as it pulverizes Human on a velomobile against the bottom axis.
Same as sailing ships I suppose, if you are just using the wind like a hot air balloon anyway.
It would be very difficult to measure how much energy (in calories) a sailing ship is using in order to move.
The notion of “fuel efficiency” kinda stops making sense for a sailboat.