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船舶使用年限的确定,是一个重要的技术政策问题和技术经济问题,它不仅影响着船舶的更新、造价、营运性能与成本核算,而且影响着修造船工业的组成与科学技术的发展。本文根据对国内外船舶的一些调查统计,分析了各国船龄的现状,船龄对船舶性能的影响,船体的自然磨损与技术使用年限,用运输成本确定船舶使用年限,技术进步与船舶使用年限等问题,提出我国运输船舶的使用年限应从40年降低到15～20年的建议。
The determination of the useful life of a ship is an important technical policy issue and a technical and economic issue. It not only affects the ship’s renewal, cost, operational performance and cost accounting, but also affects the composition of shipbuilding industry and the development of science and technology. Based on some surveys of domestic and foreign ships, this paper analyzes the current status of age of ships in each country, the influence of age on the performance of ships, the natural wear and tear of technical service life of ships, and the transportation cost to determine the service life, technical progress and life span of ships And other issues, put forward China’s transport ship service life should be reduced from 40 years to 15 to 20 years of proposal.