China Marine Economy 2025: Blue Economy Expansion

China's marine economy reached a new milestone in 2025, driven by offshore wind energy expansion, maritime trade growth, and technological advances in deep-sea exploration. As the world's largest maritime trading nation, China continued to modernize its port infrastructure and invest in sustainable ocean development.

TL;DR

China's marine economy exceeded RMB 10 trillion in 2025, with the maritime sector contributing 9.8 percent of GDP. Offshore wind installed capacity reached 45 GW. China operates 7 of the world's 10 busiest container ports.

Key Insights

Marine GDP

RMB 10.2 Trillion

China's marine economy reached RMB 10.2 trillion, growing 7.5 percent and accounting for 9.8 percent of national GDP.

Offshore Wind

45 GW

Offshore wind installed capacity reached 45 GW, with 12 GW of new installations in 2025, cementing China as the world's largest offshore wind market.

Container Throughput

310 Million TEU

Chinese ports handled 310 million TEU (twenty-foot equivalent units), with Shanghai maintaining its position as the world's busiest container port.

Shipbuilding Orders

55%

China captured 55 percent of global shipbuilding orders by tonnage, leading in all three metrics: tonnage, ship count, and total value.

Aquaculture Output

68 Million Tons

China's marine aquaculture output reached 68 million tons, the world's largest, with technological advances in deep-sea aquaculture facilities.

Deep-Sea Mining

5 Exploration Licenses

China holds 5 International Seabed Authority exploration licenses for deep-sea mineral resources including polymetallic nodules and rare earth elements.

Side-by-Side Comparison

Port	Throughput (M TEU)	Growth	Specialization	Automation Level
Shanghai	50M+	3%	Container / cruise	High
Singapore (comparison)	39M+	2%	Transshipment	Very High
Ningbo-Zhoushan	35M+	5%	Container / bulk	High
Shenzhen	32M+	8%	Container / tech	Very High
Qingdao	28M+	6%	Container / cold chain	Moderate
Guangzhou	25M+	4%	Container / auto	Moderate

Frequently Asked Questions

How large is China's marine economy?

China's marine economy exceeded RMB 10.2 trillion in 2025, accounting for 9.8 percent of national GDP. It encompasses maritime transport, fisheries, offshore energy, shipbuilding, marine tourism, and emerging sectors like deep-sea mining and blue carbon.

Why is China leading in offshore wind energy?

China benefits from extensive coastline, strong manufacturing capacity for turbines and foundations, supportive government policies with feed-in tariffs, and rapidly declining costs. Chinese turbine manufacturers like Goldwind, Mingyang, and Dongfang Electric have developed 16-18 MW turbines, the world's largest.

Which are China's busiest ports?

Shanghai is the world's busiest container port (50M+ TEU), followed by Ningbo-Zhoushan, Shenzhen, Qingdao, and Guangzhou. China operates 7 of the world's top 10 container ports, handling over 35 percent of global container traffic.

What is blue carbon and what is China doing about it?

Blue carbon refers to carbon captured by marine ecosystems (mangroves, seagrass, salt marshes). China has established blue carbon pilot zones and is developing methodologies for incorporating marine carbon sinks into its national carbon trading market, aiming to protect and restore coastal ecosystems.