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taxiya

Brigadier
Registered Member
I am (not really) waiting for SamuraiBlue's unpredictable comment on the newly revealed Chinese railgun. My predictions are:
  1. Railgun is bad, useless, no better than whatever, BECAUSE China made it out in the sea first.
  2. Railgun is great, a magical weapon to defeat Anti-ship Ballistic Missile and many more because it is cheaper to operate.
  3. He remains silent for a long long time, hoping others here to forget about his usual self-contradiction.
Prediction 3 is more likely.:rolleyes: It does seem like PLAN is watching this forum and got annoyed by SamuraiBlue, so they decide to "show you some color see see."
 

davidau

Senior Member
Registered Member
watsdiz???
sorry if posted before as it is believed that this ship was launched last year, the use of a cat-hull for stability, main purpose is for the detection and collection of underwater acoustic signatures especially those emitted by submarines ..
a couple more being built?
I thought it interesting... enjoy..

jYTK-fyrcsrx2311547.jpg


35pu-fyrcsrx2311578.jpg


cb_4-fyrcsrx2311598.jpg
 

Spooky_Anon

Just Hatched
Registered Member
Hello everyone. I am new to Sinodefenceforum, so apologies if this question has been asked before.

I have noticed that the hull plating of some classes of American combats ships is often "wrinkled." Please see the attached picture of the new Arleigh Burke destroyer USS John Finn (DDG 113). It is clear to me that the hull plating on the bow around the pennant number is somewhat warped.

Some other countries' surface combatants seem to have much smoother plating. Please see the attached picture of the Korean Sejong the Great class destroyer.

Does this matter at all? Is the "wrinkled" plating evidence of shoddy workmanship? I'm curious what the reasons for this difference are.

Thanks in advance to the Sinodefenseforum community.

USS_John_Finn_%28DDG-113%29_arrives_at_Pearl_Harbor_on_10_July_2017.JPG
0_20120717171201182yov.jpg
 

Iron Man

Major
Registered Member
Hello everyone. I am new to Sinodefenceforum, so apologies if this question has been asked before.

I have noticed that the hull plating of some classes of American combats ships is often "wrinkled." Please see the attached picture of the new Arleigh Burke destroyer USS John Finn (DDG 113). It is clear to me that the hull plating on the bow around the pennant number is somewhat warped.

Some other countries' surface combatants seem to have much smoother plating. Please see the attached picture of the Korean Sejong the Great class destroyer.

Does this matter at all? Is the "wrinkled" plating evidence of shoddy workmanship? I'm curious what the reasons for this difference are.

Thanks in advance to the Sinodefenseforum community.
They all have "wrinkles":

2000x1331_q95.jpg

They represent areas where thinner steels are being used, which happens in various places presumably where strength/rigidity is not as important.
 

jobjed

Captain
They all have "wrinkles":


They represent areas where thinner steels are being used, which happens in various places presumably where strength/rigidity is not as important.

And they are the result of temperature changes across the surface which results in contraction and expansion of the metal plates.
 

kurutoga

Junior Member
Registered Member
Hello everyone. I am new to Sinodefenceforum, so apologies if this question has been asked before.

I have noticed that the hull plating of some classes of American combats ships is often "wrinkled." Please see the attached picture of the new Arleigh Burke destroyer USS John Finn (DDG 113). It is clear to me that the hull plating on the bow around the pennant number is somewhat warped.

Some other countries' surface combatants seem to have much smoother plating. Please see the attached picture of the Korean Sejong the Great class destroyer.

Does this matter at all? Is the "wrinkled" plating evidence of shoddy workmanship? I'm curious what the reasons for this difference are.

Welcome to the forum, nobody cared much about the smoothness of the hull. On one hand US has some of the largest heaviest curviest warship existing, on the other hand USN did not seem to catch the formalism bug (at least before CG(X)) so as long as they are capable, it is all good!
 

Lethe

Captain
And they are the result of temperature changes across the surface which results in contraction and expansion of the metal plates.

How visually evident such patterns are also depends on the type of photography. Here is the French Mistral-class LPDs using HDR photography:

eXk3z0N.jpg


So yeah I wouldn't take it as evidence of poor workmanship or anything. Lighting, angles, post-processing... all that stuff matters.
 

SteelBird

Colonel
Back some years ago, I heard Russian planned to buy Chinese supply ship and type 054 frigate. Did this really happen and what's the follow-up story?
 
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