Core Viewpoint - The world's first underwater data center utilizing "offshore wind direct connection" technology has officially commenced operations in Shanghai Lingang, marking a significant breakthrough in the integration of artificial intelligence infrastructure, marine energy utilization, and marine engineering in China [1][3]. Investment and Project Overview - The total investment for the Shanghai Lingang underwater data center project is 1.6 billion yuan, with a total construction scale of 24 megawatts planned in two phases. The first phase, now operational, has a construction scale of 2.3 megawatts [3]. - The project innovatively combines "offshore wind power direct connection" and "natural seawater cooling" technologies, achieving a PUE (Power Usage Effectiveness) of no more than 1.15 and a green electricity supply rate exceeding 95% [3]. Design and Engineering Innovations - This underwater data center is the first of its kind to integrate "offshore wind power direct connection" and "natural seawater cooling" technologies, facing complex marine conditions that traditional designs cannot accommodate [4]. - The design team has created a new structural model for the underwater data center, utilizing a "cylindrical vertical structure" for the data cabin, which enhances internal usable space and reduces wave impact, significantly improving overall stability [6]. Construction and Installation Achievements - The construction team employed innovative welding techniques, achieving a one-time pass rate of 98.6% during the welding of the conduit frame, demonstrating high precision and quality control [8]. - The installation process involved a complex underwater operation, where the data cabin was successfully submerged and precisely aligned with the underwater steel piles, achieving "zero deviation" during the critical installation phase [11].

Core Viewpoint - *ST Weihai (002586.SZ) reported a decline in revenue and net profit for the first half of 2025, indicating potential challenges in its financial performance [1] Financial Performance - The company's operating revenue for the first half of 2025 was 830 million yuan, representing a year-on-year decrease of 4.10% [1] - The net profit attributable to shareholders of the listed company was 8.3278 million yuan [1] - The net profit attributable to shareholders after deducting non-recurring gains and losses was 4.497 million yuan [1] - The basic earnings per share were 0.0073 yuan [1]

Core Viewpoint - The article highlights the remarkable journey of Li Shimin, a captain at China Communications Construction Company (CCCC), who transitioned from being a teacher to a leader in marine engineering, showcasing the spirit of perseverance and continuous improvement in the industry [1][3]. Group 1: Career Transition - Li Shimin, born in 1986, initially worked as a teacher after graduating from a normal school, leading a stable life until a chance encounter in 2004 inspired him to join CCCC, marking a significant career shift [3][4]. - His early days involved working on the "Sanhang Sand Pile No. 1" vessel, where he learned essential skills in marine engineering, facing challenges in a demanding work environment [3][4]. Group 2: Professional Development - In 2007, Li was promoted to the position of intern deputy captain on the "Sanhang Pile No. 5," participating in the construction of the largest ore terminal in China, which enhanced his professional skills and resilience [5]. - By 2015, he became the first mate on "Sanhang Pile No. 18," entering the offshore wind power construction sector, and was promoted to captain in 2019, leading significant projects like the Jiaxing offshore wind power project [5][6]. Group 3: Innovations and Achievements - Li's notable achievement in the Jiaxing wind power project involved a complex operation requiring precise maneuvering of the vessel, which he executed efficiently, reducing the operation time by 10 hours compared to conventional methods [6][9]. - In 2025, he took command of the "Sanhang Pile No. 22," a state-of-the-art vessel designed for offshore wind power construction, capable of performing complex piling operations with enhanced efficiency [8][9]. Group 4: Technological Advancements - The "Sanhang Pile No. 22" features innovative design elements, including a rotating structure for multi-angle piling and a foldable pile frame, making it suitable for various challenging construction scenarios [8]. - The vessel's first task involved the successful installation of an 84-meter steel pipe pile in a complex underwater environment, demonstrating the application of advanced satellite positioning systems for precise operations [9].