In the high-stakes world of submarine acquisition, true performance-first designs are exceedingly rare. The immense cost involved almost always forces trade-offs, shaping vessels around budget, strategy, and industrial constraints as much as pure capability. Until now the U.S. Navy’s Seawolf-class stood as the benchmark of an uncompromising approach to undersea warfare. Now, it appears that China’s latest nuclear-powered attack submarine, the Type 095 (also known as Type 09V), is built with a similarly ambitious philosophy.
The U.S. Navy’s Seawolf-class represents a pinnacle in uncompromising submarine design, intended to dominate the undersea battlespace. Now China is building a new submarine which is, in key respects, a lot like the Seawolf-class.
The Chinese Navy’s (PLAN) latest nuclear-powered submarine, the Type 095, is considerably larger than the preceding Type 093 Shang-class. Its size is very similar to the U.S. Navy’s Seawolf-class, and the analogy works on several levels.
Seawolf – Master of the seas
The Seawolf was an uncompromised design, intended from the start to be the best. But that came at a huge price tag. So after the collapse of the Soviet Union in 1991 only three of the incredibly expensive Seawolfs were ever built, and the subsequent Virginia-class were, most importantly, cheaper. Over time the Virginias have been able to benefit from technological advances which the Seawolfs couldn’t, but the older boats remain the gold standard.
In China similar progression is playing out, but in reverse. The current Type 093B Shang-class, of which at least four are in service, is just the latest iterative development of the -093 family. It features a vertical launch system (VLS) for cruise missiles, and slightly refined hydrodynamics, but otherwise is a lengthened version of earlier -093s much like the latest Virginias. The new Type 095 class, of which the lead boat is fitting out, is a fresh design completely. And it is much more like the Seawolf.
Golden ratio
An initial surprise is that the Type 095 is, despite always expected to be a larger boat, not longer than the preceding Type 093 Shang-class. In fact it may be slightly shorter. Yet it is noticeably wider, with the beam increased to around 12 meters from around 11 meters. This makes it almost the same size as the Seawolf-class.
While there is no suggestion that it is a straight copy of the American design, there is some sense in these new dimensions; there was a hydrodynamic logic in Seawolf’s specifications. Like a whale or other marine creature there is an optimum length-to-beam ratio which optimizes drag and allows the creature to go faster, or use less energy. Counter-intuitively the shorter-fatter Seawolf has a much more efficient hull design than the later, more compromised, Virginia-class.
Its length of 108 meters and beam of 12 meters give it a relatively short length-to-beam ratio of 1:9. Meanwhile the Virginia-class are longer and thinner (115 meters by 10 meters) resulting in a much higher length-to-beam ratio of 1:11.5. Although this compromise allows the Virginias to be cheaper to build and almost match the Seawolf’s overall capabilities, it comes at the cost of speed. The maximum speeds of the U.S. boats is classified, but the Seawolf is understood to be significantly faster.
The Type 095’s estimated length-to-beam ratio is also around 1:9 (length approximately 105-108 meters, beam around 12 meters). The Chinese could have made it slimmer but being a bottom-up design, they chose a more optimum hull form, close to the Seawolf’s. Together with a relatively pointed bow and large X-form rudders this suggests that the Type 095 is designed for a high underwater speed.
Type 095: Not just a copy of Seawolf
Where the Type 095 deviates from the Seawolf is the inclusion of a vertical launch system (VLS) immediately behind the sail. This will allow it to carry additional land-attack or anti-ship cruise missiles, possibly consisting of the DH-10A land-attack cruise missile and either YJ-17 or YJ-20 hypersonic missiles.
China is far beyond the era iteratively improving Cold War Soviet designs. Yet they likely remain behind in some nuances of nuclear submarine construction. So there may still be elements of Russian technology transfer for the Type 095, but exactly what, and how consequential it is to China’s ambitions, remains elusive.
The Type 095 also adopts X-form rudders and, possibly, turbo-electric drive, features of the U.S. Navy’s next-generation SSN(X) too. As time goes by we may learn more about the Chinese boat, but as usual China seems in no hurry to reveal even the most basic details.
