航海装备板块12月9日涨1.57%，江龙船艇领涨，主力资金净流入1.9亿元

Group 1 - The marine equipment sector increased by 1.57% compared to the previous trading day, with Jianglong Shipbuilding leading the gains [1] - On the same day, the Shanghai Composite Index closed at 3909.52, down 0.37%, while the Shenzhen Component Index closed at 13277.36, down 0.39% [1] Group 2 - The marine equipment sector saw a net inflow of 190 million yuan from main funds, while retail funds experienced a net inflow of 56.0752 million yuan and speculative funds had a net outflow of 246 million yuan [2]