It depends on how much time the hull has been in service. Corrosion and fatigue cracking are the major factors to consider when deciding remaining useful service life. But, Liaoning's hull haven't been used much as it mostly sat in dry dock I believe before China purchased it. So there shouldn't be many fatigue cracks at all. It would be interesting to know how much corrosion took place while the hull sat in dry dock before purchase.
CV-16, CV-17 STOBAR carrier thread (001/Liaoning, 002/Shandong)
- Thread starter Blitzo
- Start date
It depends on how much time the hull has been in service. Corrosion and fatigue cracking are the major factors to consider when deciding remaining useful service life. But, Liaoning's hull haven't been used much as it mostly sat in dry dock I believe before China purchased it. So there shouldn't be many fatigue cracks at all. It would be interesting to know how much corrosion took place while the hull sat in dry dock before purchase.
When they build a ship's hull, do they consider corrosion during service lifetime and work out how much extra thickness to include in the the hull structures etc.? Or do they build it with so much extra margin that it is not something to worry about in a ship's expected useful service lifetime?
It's something I've always wondered and probably should have posted in the ask anything thread but since we're on it might as well ask here if anyone know.
It's something I've always wondered and probably should have posted in the ask anything thread but since we're on it might as well ask here if anyone know.
The long answer short is that hull fatigue is considered at the design/engineering phase and a range of measures is taken to provide an approximate service life including wear and tear. But ships also go into dock for reapplication of anti fouling and other protective measures as well. But its the main reason most navies design a hull for circa 30 years of service and the ship after that time is spent from a hull point of view. Certain measures can be taken for a life extension, generally lowering further performance and adding weight (using up a structurally planned weight reserve) but there's a limit to what can be done. The rest hinges on how hard the ship was used over its life. This is for instance why (among other reasons) the life extension effort on the Ticonderoga class has failed so miserably.
Latest from Dalian - The drydock has been drained, and CV-16 Liaoning got some orange-colored coverings on her ski-jump.
Satellite photograph taken by Sentinel-2 L2A, dated October 8 2023.
Satellite photograph taken by Sentinel-2 L2A, dated October 8 2023.
More than likely that is a primer for a new non-skid coating.
Hi,
My long-awaited book, “VARYAG: The Mysterious Journey from Ukraine to China” has finally been published in October 2023. You can find it on .
VARYAG: The Mysterious Journey from Ukraine to China by Ahmet H. Demirayak
A group of high-ranking officers in the Chinese army task a business executive living in Hong Kong to purchase an unfinished aircraft carrier in Ukraine, against the Chinese President's prohibition. It is announced as a floating casino, but its true goal was to provide China with its first aircraft carrier. The purchased vessel, Varyag, quickly captures the attention of international intelligence agencies and the global public. The journey of the massive ship causes a red alert across East Asia, especially Taiwan, South Korea, Japan, Southeast Asian capitals, then the United States and Western countries. The grim reality of the voyage turns out to be quite different and much longer than the Chinese officers' expectations.
The journey starts from Mykolaiv, Ukraine and ends in Dalian, China, over 627 days, with an extended tugboat operation through the Turkish Straits. Spanning Macau, Hong Kong, the US, and Turkey, the events during and before this process are of a nature that will push the boundaries of readers' imagination.
“Varyag: The Mysterious Journey from Ukraine to China” not only sheds light on the obscure parts of an epic journey filled with mystery and intrigue, as a part of the global memory, but also uncovers its unknown aspects through notes, interviews, and documents accumulated over 22 years of investigation.
My long-awaited book, “VARYAG: The Mysterious Journey from Ukraine to China” has finally been published in October 2023. You can find it on .
VARYAG: The Mysterious Journey from Ukraine to China by Ahmet H. Demirayak
A group of high-ranking officers in the Chinese army task a business executive living in Hong Kong to purchase an unfinished aircraft carrier in Ukraine, against the Chinese President's prohibition. It is announced as a floating casino, but its true goal was to provide China with its first aircraft carrier. The purchased vessel, Varyag, quickly captures the attention of international intelligence agencies and the global public. The journey of the massive ship causes a red alert across East Asia, especially Taiwan, South Korea, Japan, Southeast Asian capitals, then the United States and Western countries. The grim reality of the voyage turns out to be quite different and much longer than the Chinese officers' expectations.
The journey starts from Mykolaiv, Ukraine and ends in Dalian, China, over 627 days, with an extended tugboat operation through the Turkish Straits. Spanning Macau, Hong Kong, the US, and Turkey, the events during and before this process are of a nature that will push the boundaries of readers' imagination.
“Varyag: The Mysterious Journey from Ukraine to China” not only sheds light on the obscure parts of an epic journey filled with mystery and intrigue, as a part of the global memory, but also uncovers its unknown aspects through notes, interviews, and documents accumulated over 22 years of investigation.