You are correct; these are indeed Becker bulb rudders.

Cheers

Vlad

These seem Becker Bulb rudders.
Regards.
Baldizza.

I would say that the size of these rudders is enough to direct the vessel for routine navigation.
For manoeuvring, the effect of the rudder may be less important for vessels with two propellers, as the propellers differentiation effect is more sought, than the effect on the rudders. So the rudders can be smaller.
As the rudders are smaller, the sampling of the elements to move them is reduced and therefore cheaper, etc ...
Regards,
Yvon

Bulbs on both rudders are at the same level as the propellers' hubs, so no illusion here. I notice similar rudders don't go fully down on pics of other big ships. First time such discovery for me, cause I looked at a lot of GA plans of ships under 200m & rudders there go down till the ship's bottom level. So I'm curious here.

I don't think it's an illusion, Patrick, as the camera was more than 100 meters from the vessel, roughly at the ground level. Had I been closer, the rudders would have looked tiny indeed...

Cheers

Vlad

It may also be an optical illusion, as the camera is looking up.

You got me thinking, Denis... So, I went to check other photos of large LNG carriers; all of them have smaller rudders than the ships with a single propeller/rudder. I guess two rudders have enough area to allow proper manoeuvrability, so they can be smaller in size.

Cheers

Vlad

Why her rudders don't go much below the propeller's axis level?