航海装备板块1月7日跌1.84%，江龙船艇领跌，主力资金净流出7.51亿元

Group 1 - The marine equipment sector experienced a decline of 1.84% on January 7, with Jianglong Shipbuilding leading the losses [1] - The Shanghai Composite Index closed at 4085.77, up 0.05%, while the Shenzhen Component Index closed at 14030.56, up 0.06% [1] - Key stocks in the marine equipment sector showed varied performance, with China Shipbuilding down 1.82% and Jianglong Shipbuilding down 2.89% [1] Group 2 - The net outflow of main funds in the marine equipment sector was 751 million yuan, while retail investors saw a net inflow of 751 million yuan [1] - Detailed fund flow data indicates significant net outflows for several companies, including Jianglong Shipbuilding with a net outflow of 71.58 million yuan [2] - The retail investor net inflow for Jianglong Shipbuilding was 112 million yuan, indicating strong retail interest despite the overall sector decline [2]