Core Points - The Tianlong-3 rocket's first stage propulsion system successfully completed a maritime test in Shandong Haiyang, marking a significant milestone for China's private aerospace sector [1][3] - The Tianlong-3 is the largest liquid rocket developed by a private company in China, measuring 72 meters in length and weighing approximately 600 tons at launch [3] - The rocket's first stage is equipped with nine "Tianhuo-12" engines, capable of launching 36 satellites in a single mission, supporting both cargo transport to the Chinese space station and medium-to-high orbit satellite launches [3] Breakthroughs - This test marks the world's first maritime propulsion system test, validating the operational coordination and correctness of the first stage rocket systems [3] - The test also set a new record for thrust in China's commercial aerospace liquid rocket engines [3] Future Plans - The Tianlong-3 is scheduled for its maiden flight by the end of 2025 [3] - The test was conducted on the HOS-1 platform, which is China's first semi-fixed maritime test platform developed by Shandong Maritime Commercial Aerospace Launch Service Co., Ltd [3] Operational Capacity - The successful test indicates that the Dongfang Aerospace Port now possesses full system testing capabilities for liquid rockets [3] - To date, the Dongfang Aerospace Port has supported 18 maritime launch missions for solid rockets, along with three propulsion system tests and two flight recovery tests for liquid rockets [3]