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Photo Details
Photographer:lappino [View profile]Title:GRACE EMILIAAdded:Feb 22, 2021
Captured:February 22, 2021IMO:9884174Hits:606
Location:Mokpo, Mogpo, Korea (South)
Photo Category: Ships under Construction
New large LNG tanker, hull No. 8032, soon to be launched at Hyundai Samho shipyard.
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Photo Comments (8)

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lappino on Feb 25, 2021 08:56 (22 hours ago)
You are correct; these are indeed Becker bulb rudders.


Baldizza on Feb 24, 2021 17:35 (1 day ago)
These seem Becker Bulb rudders.
Yvon Perchoc on Feb 24, 2021 16:32 (1 day ago)

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 ...
Dеnis on Feb 24, 2021 12:00 (1 day ago)
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.
lappino on Feb 23, 2021 10:29 (2 days ago)
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...


Patrick Hill on Feb 23, 2021 09:32 (2 days ago)
It may also be an optical illusion, as the camera is looking up.
lappino on Feb 23, 2021 09:20 (2 days ago)
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.


Dеnis on Feb 23, 2021 00:43 (3 days ago)
Why her rudders don't go much below the propeller's axis level?
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