证券代码：600764 股票简称：中国海防 编号：临 2025-053 中国船舶重工集团海洋防务与信息对抗股份有限公司 关于为所属子公司提供担保的进展公告 公司签署《保证合同》（25-BZ-01-016），就辽海输油融资事宜提供保证， 担保金额人民币 500 万元。 本公司董事会及全体董事保证本公告内容不存在任何虚假记载、误 导性陈述或者重大遗漏，并对其内容的真实性、准确性和完整性承担法 律责任。 重要内容提示: 被担保人：中船辽海输油气设备（沈阳）有限责任公司（以下简 称"辽海输油"）为中国船舶重工集团海洋防务与信息对抗股份 有限公司（以下简称"中国海防"或"公司"）并表范围内的全 资子公司。 担保金额： 公司本次为辽海输油提供担保额为人民币 500 万元；截至本公告 披露日，公司为辽海输油提供担保金额共计人民币 2,950 万元。 本次担保不存在反担保。 公司不存在逾期对外担保情况。 一、 担保情况概述 近日，公司与中船财务有限责任公司（以下简称财务公司）北京分 公司第九届董事会第三十六次会议、2024 年年度股东大会审议通过 了《关于 2025 年度为所属子公司提供担保额度上限的议案》，同意在核 定的担 ...

转自：前瞻产业研究院 以下数据及分析来自于前瞻产业研究院深海科技研究小组发布的《中国海洋经济产业发展状况调研与投 资战略分析报告》 行业主要上市公司：中国船舶(600150.SH);中船防务(600685.SH);振华重工(600320.SH);中海油服 (601808.SH);中国海防(600764.SH);海兰信(300065.SZ);中天科技(600522.SH)等 本文核心数据：上市公司业务布局;上市公司业绩对比 深海科技行业上市公司汇总 中国深海科技上市公司数量较多，已形成完整产业链，涵盖高端装备制造、油气勘探服务、深海通信与 探测多个领域。以中国船舶、中海油服等为代表的央企龙头，主导深海钻井平台、特种船舶等重大装备 制造;中天科技、东方电缆在海底光缆电缆领域技术领先;海兰信、中国海防则聚焦水下探测与国防科 技。这些企业作为国家海洋战略的核心力量，正持续推动深海资源开发与关键技术自主化，展现出强大 的综合竞争力。 各公司公告 图表 1: 2025年中国深海科技产业上市公司汇总(一) | 公司简称 | 股票代码 | 要点 | 关联度 | | --- | --- | --- | --- | | 中国船舶 ...

Group 1 - The marine equipment sector increased by 1.55% on December 19, with Tianhai Defense leading the gains [1] - The Shanghai Composite Index closed at 3890.45, up 0.36%, while the Shenzhen Component Index closed at 13140.22, up 0.66% [1] - Key stocks in the marine equipment sector showed varied performance, with Tianhai Defense closing at 7.75, up 1.97%, and Jianglong Shipbuilding closing at 19.36, down 0.21% [1] Group 2 - The marine equipment sector experienced a net outflow of 16.086 million yuan from institutional investors and 41.6625 million yuan from retail investors, while individual investors saw a net inflow of 57.7484 million yuan [1] - Detailed fund flow data indicates that Zhongchuan Defense had a net inflow of 20.0552 million yuan from institutional investors, while Jianglong Shipbuilding faced a significant net outflow of 47.269 million yuan [2] - The overall fund flow dynamics show a mixed sentiment, with some stocks attracting retail interest despite institutional outflows [2]

| 代码 | 简称 | 今日涨跌幅 | 今日换手率 | 主力资金流量（万 | 主力资金净流入比率 | | --- | --- | --- | --- | --- | --- | | | | （%） | （%） | 元） | （%） | | 300516 | 久之洋 | 20.00 | 14.33 | 10099.51 | 6.21 | | 688146 | 中船特 气 | 3.08 | 7.47 | 3874.35 | 8.57 | | 600482 | 中国动 力 | -3.06 | 1.07 | -315.36 | -0.66 | | 301311 | 昆船智 能 | -2.63 | 1.45 | -357.93 | -5.62 | | 300847 | 中船汉 光 | -2.24 | 1.92 | -993.25 | -10.50 | | 300527 | ST应急 | -2.47 | 1.66 | -3144.97 | -23.45 | | 600072 | 中船科 技 | -2.48 | 1.31 | -3215.39 | -19.76 | | 600764 | 中国海 防 | -1.06 | 1. ...

证券之星消息，12月15日航海装备板块较上一交易日下跌1.48%，江龙船艇领跌。当日上证指数报收于 3867.92，下跌0.55%。深证成指报收于13112.09，下跌1.1%。航海装备板块个股涨跌见下表： 以上内容为证券之星据公开信息整理，由AI算法生成（网信算备310104345710301240019号），不构成投资建议。 | 代码 | 名称 | 收盘价 | 涨跌幅 | 成交量(手) | 成交额(元) | | --- | --- | --- | --- | --- | --- | | 601890 | 亚星笛链 | 10.35 | -0.86% | 32.64万 | 3.37亿 | | 600150 | 中国船舶 | 33.81 | -1.17% | 43.44万 | 14.75 Z | | 300810 | 中利海讯 | 37.96 | -1.30% | 2.40万 | 9159.05万 | | 600685 | 中腊防务 | 28.75 | -1.74% | 21.23万 | 6.16亿 | | 300600 | 国瑞科技 | 15.08 | -1.95% | 6.24万 | 9473.15万 | ...

Investment Rating - The report does not explicitly state an investment rating for the underwater communication industry Core Insights - Underwater communication is primarily achieved through acoustic waves, which are currently the only viable means for medium to long-distance wireless communication in marine environments due to the high attenuation of electromagnetic and optical waves in seawater [4][5] - The underwater communication technology is experiencing significant advancements towards networking, intelligence, and comprehensive development, with a focus on low-energy routing protocols and the integration of artificial intelligence [13][14] Summary by Sections Underwater Communication Overview - Underwater wireless communication involves transmitting data through wireless carriers in aquatic environments, categorized into underwater electromagnetic, optical, and acoustic communication [2] - Acoustic communication is highlighted as the most effective method for underwater data transmission, capable of long-range communication with minimal attenuation [4] Challenges in Underwater Acoustic Communication - Major challenges include absorption attenuation, long delays, strong multipath effects, and interference from ocean noise [8][10] - The available bandwidth for long-distance underwater acoustic communication systems is often less than 1 kHz, limiting communication rates [9] Applications of Underwater Acoustic Communication - In the civilian sector, applications include marine surveys, underwater engineering, and seabed resource development, significantly enhancing data acquisition and safety monitoring [11] - In military applications, it facilitates two-way communication between surface ships and submarines, as well as anti-submarine warfare networks [12] Market Competition Landscape - The Chinese underwater acoustic communication industry is characterized by a diverse competitive landscape dominated by state-owned research institutions and military enterprises, with a rapid rise of private companies [16] - Key players include Harbin Engineering University, Chinese Academy of Sciences, and various enterprises like China Marine Defense and Wisdom Ocean Technology, which are driving innovation and market growth [17]

Group 1 - The company is closely monitoring national and local policies and plans related to the development of the marine economy [1] - The company is actively researching potential development opportunities in relevant fields, considering its own industry and technological characteristics [1] - This approach aims to provide references for long-term strategic planning [1]

Group 1 - The core viewpoint of the article indicates that the stock price of China Haifang (600764) in the secondary market may be influenced by various factors including market conditions, industry trends, and investor sentiment [1] - The company states that its production and operational situation is currently stable [1]

证券代码：600764 股票简称：中国海防 编号：临 2025-052 中国船舶重工集团海洋防务与信息对抗股份有限公司 关于为所属子公司提供担保的进展公告 本公司董事会及全体董事保证本公告内容不存在任何虚假记载、误 导性陈述或者重大遗漏，并对其内容的真实性、准确性和完整性承担法 律责任。 重要内容提示: 被担保人：中船重工双威智能装备有限公司（以下简称"双威智 能"）为中国船舶重工集团海洋防务与信息对抗股份有限公司（以 下简称"中国海防"或"公司"）并表范围内的全资子公司。 担保金额： 公司本次为双威智能提供担保额为人民币 1,000 万元；截至本公 告披露日，公司为双威智能提供担保金额共计人民币4,500万元。 一、 担保情况概述 近日，公司与中船财务有限责任公司（以下简称财务公司签署《保 证合同》（25-BZ-010），就双威智能融资事宜提供保证，担保金额人民 本次担保不存在反担保。 公司不存在逾期对外担保情况。 币 1,000 万元。 公司第九届董事会第三十六次会议、2024 年年度股东大会审议通过 了《关于 2025 年度为所属子公司提供担保额度上限的议案》，同意在核 定的担保额度范围内对公司下属子公 ...

Market Overview - The A-share market showed divergence on December 9, with the Shanghai Composite Index down 0.13% to 3918.83 points, while the Shenzhen Component Index rose 0.09% and the ChiNext Index increased by 1.07% [1] - The total trading volume in the A-share market reached 1.26 trillion yuan [1] Industry Developments - Nvidia is expected to re-enter the Chinese market, as the U.S. government announced it would allow Nvidia to sell its H200 AI chips to China, imposing a 25% fee per chip. This arrangement will also apply to other AI chip companies like AMD and Intel [3] - The Fujian Province's action plan for the electric ship industry (2026-2028) supports the construction and operation of electric sightseeing boats and ferries, particularly in the Xiamen-Kinmen route [3] - The Xiamen municipal measures to promote the integrated circuit industry include subsidies for companies involved in core equipment and key materials for semiconductor manufacturing [3] Sector Performance - The CPO concept stocks saw a resurgence, with companies like Shaanxi Huada and Dekeli leading the gains, while Fujian local stocks such as Anji Food and Longzhou Co. also experienced significant short-term increases [4] - The telecommunications sector led the market with an average increase of 3.82%, while coal and non-ferrous metals sectors saw declines of 1.87% and 1.72%, respectively [5] Company Insights - China Shipbuilding is recognized as the largest and most comprehensive listed shipbuilding giant globally, positioning it well to capitalize on the upturn in the global shipbuilding industry [8] - China Power's low-speed machinery products are essential for ocean-going vessels and are expected to benefit from the improving shipbuilding industry [8] - China Marine Defense, a leader in underwater defense equipment, is anticipated to expand its business in the context of rising demand for unmanned technologies [9] - China Shipbuilding Defense's products related to marine engineering platforms and wind power installation vessels are expected to benefit significantly from the national "deep-sea economy" strategy [9]