共查询到19条相似文献,搜索用时 187 毫秒
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该文介绍了所研制的双机单可调浆推进装置监控系统的组成及其功能。鉴于系统配置模块化、组合化、系列化,具有功能齐全,安全可靠,故障诊断全面,操作简单方便等特点,已为国内众多海监船、渔政船和军船所采用。 相似文献
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利用ACCESS数据库导入艾尔法和泰勒法的阻力估算图谱,开发了快速计算渔政船有效马力的程序,对8艘渔政船有效马力的计算及同已有模型试验结果的比较分析,得到各方法估算渔政船有效马力的修正系数,给出了适用于渔政船有效马力的计算方法. 相似文献
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本文用正交设计法对23.6万吨巨型油船的主尺度进行了分析论证,建立了巨型油船船型论证所需的数学模型,编制了计算机程序,通过较为详细计算分析和多目标综合评判,得到了优化尺度方案,并且通过方案设计对优化后的尺度方案加以验证。分析和设计计算的结果表明,建立的数学模型基本可靠,正交设计法用在VLCC的尺度论证中,计算简便、准确。 相似文献
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500t排水量渔政船在主尺度限制、机型已定的情况下,用户提出比较高的航速、根据估算,很难满足要求。经过分析、变换型线和反复船模试验,取得了满意的结果,这可能有助于同类型小尺度船舶的型线设计。 相似文献
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为分析海洋执法船主尺度之间的变化规律,对海洋执法船的发展趋势进行了介绍,并对其相关船型数据资料进行整理分析。采用多元回归的数学方法,建立了基于多变量的海洋执法船主尺度数学模型,有利于对海洋执法船主尺度的变化规律进行分析与掌握,为海洋执法船的报价设计与初步设计提供一定的科学依据。 相似文献
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目前,渔业船舶已经成为我国海上搜救工作中的一支重要力量,但发生海难事故的渔业船舶自身的救助成功率却偏低。文中试结合近几年渔业遇险船舶搜救的大量案例,分析影响渔业船舶救助成功率的几大主要原因,并对如何提高渔业遇险船舶救助成功率提出了若干建议。 相似文献
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This paper investigates whether deficiencies detected during port state control (PSC) inspections have predictive power for future accident risk, in addition to other vessel-specific risk factors like ship type, age, size, flag, and owner. The empirical analysis links accidents to past inspection outcomes and is based on data from all around the globe of PSC regimes using harmonized deficiency codes. These codes are aggregated into eight groups related to human factor aspects like crew qualifications, working and living conditions, and fatigue and safety management. This information is integrated by principal components into a single overall deficiency index, which is related to future accident risk by means of logit models. The factor by which accident risk increases for vessels with above average compared to below average deficiency scores is about 6 for total loss, 2 for very serious, 1.5 for serious, and 1.3 for less-serious accidents. Relations between deficiency scores and accident risk are presented in graphical format. The results may be of interest to PSC authorities for targeting inspection areas, to maritime administrations for improving asset allocation based on prediction scenarios connected with vessel traffic data, and to maritime insurers for refining their premium strategies. 相似文献
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着重围绕渔业船舶评估技术规范、评估特点、参数选取、范围界定、不确定影响因素及勘验评估等方面进行规范性的研究,为渔业船舶抵押贷款、海损事故、保险理算等价格评估的公正性和正确性提供科学的依据。 相似文献
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ABSTRACTInspections play a key role in keeping vessels safe. Inspection authorities employ different policies to decide which vessels to inspect, including type of vessel, age, and flag. Attention for vessel history is usually restricted only to past detentions. This paper demonstrates that the correlation between the probabilities of detention and (very serious and serious) incidents is very low and that proactive prevention of future incidents is improved by accounting for both risk dimensions, that is, by combining past incident and detention information for targeting high-risk vessels for inspection. Five combined methods are presented to classify vessels based on these two risk dimensions, each of which involves extensive sets of factors. These combined classification methods have predictive power for future incidents. Depending on the applied inspection rate, incorporation of incident risk improves inspection hit rates for vessels with future incidents by 30–50% compared to using only detention information. It is recommended to focus on vessels where both risks are relatively high. A practical example shows how the methods can be applied for inspection selection and for prioritizing inspection areas defined in terms of eight risk domains that include collisions, groundings, engine and hull failures, loss of life, fire, and pollution. 相似文献
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文中列举和分析了海事执法督察工作的现状和存在的问题,阐述了海事执法督察工作的内涵,并提出了建立服务型海事执法督察工作的设想。 相似文献
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论述了有关船舶应急电系统的有关规范要求,并结合工作经验提出了应急电系统的检查项目及缺陷处理程序。 相似文献
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主尺度确定是船舶设计初期的重要工作。许多学者已对散货船、油船等船型的主尺度要素进行了研究分析,而对豪华邮轮主尺度的研究还很少。在对豪华邮轮的特点进行分析的基础上,搜集了40余艘豪华邮轮的船型资料,分析了豪华邮轮各个主尺度要素的特点以及相互关系。运用统计学方法分析处理统计数据,分别用单变量和多元回归分析方法建立了主尺度数学模型,并对回归结果进行了验证和误差分析。经检验,得到的回归公式误差在一定范围内,具有一定显著性和可信性,可供设计者参考。 相似文献