The area it appeared in was tens of thousands kilometres away from the Chinese coast, and far beyond the range the 7,500-tonne destroyer could sustain without resupply, leaving aside the requirements for the return journey.

The PLA Navy’s previous navigation of such long distances usually included supply ships to provide fuel, fresh water, and other necessary provisions, carrying out what are known as “under way replenishment” operations. But this time the Yinchuan was seen sailing alone.
That means the warship either had to gain access to local friendly ports or replenish from other alternative floating logistic assets, explained Collin Koh, a research fellow at Singapore’s Institute of Defence and Strategic Studies.
One possibility was that the Yinchuan might have made port calls in Pacific Island nations in the region, where Beijing has significantly strengthened its economic ties and diplomatic influence.
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Last year, the Solomon Islands entered into a security cooperation agreement with China. Kiribati and another unidentified nation were also reported to be in similar talks, but the reports were not confirmed.According to Koh, if the Yinchuan had called at a port in the region, local authorities might have chosen not to announce it, “to avoid yet another public controversy given the recent commotion over China’s growing influence and reported interest to expand its security presence in the region”.
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US warns Pacific island nations to be wary of ‘shadowy’ agreements with China
Under way replenishment capacity indicates a navy’s ability to expand and sustain its presence away from home waters.
The Chinese fleet is still in the transitional stages of achieving its aim to become a “blue water navy” by 2035, and remains hugely reliant on its own logistics ships to support its warships, rather than acquiring resupply services from foreign ports.The PLA Navy has two types of supply ships in service, the 48,000-tonne Type 901 for aircraft carrier strike groups, and the 23,000-tonne Type 903 for smaller flotilla.
For the Yinchuan to go solo for this far-seas cruise does indicate the growing confidence of the PLA Navy, Koh said.
Arranging a replenishment port call involves advance planning, logistics arrangements and no objections from the host country, according to Chinese military commentator Song Zhongping.
“The logistics officers should plan and make contact in advance and, with the host country’s permission, they could visit the port to resupply. That is the international norm,” Song said.
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The US Navy can easily access replenishment services around the world because their global hegemony gives them a worldwide network of hundreds of overseas naval bases, Beijing-based naval expert Li Jie said.
“China does not seek that [kind of hegemony], so there aren’t and won’t be many foreign bases,” said Li.
The PLA Navy’s only foreign base so far is in the Horn of Africa nation of Djibouti, which regularly replenishes Chinese warships as they carry out anti-piracy escort operations through the Indian Ocean.
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China’s navy runs anti-piracy hostage rescue drill in east Africa
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Li said sailing with its own supply vessels will remain the norm for the PLA Navy in the foreseeable future, but more such solo journeys may be carried out by larger ships over even longer distances.
“The Yinchuan’s trip is like a testing of the waters. In the future, such missions could be conducted by the Type 055 destroyers, for example,” Li said.
“China’s national interests exist in [the Pacific] area, the navy has to be present and protect those interests.”
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