Derivation of Optimum Outfit Density for Surface Warships based on the Analysis of Variations in Work Content and Workforce Density and Productivity with Ship Size

IF 0.5 4区 工程技术 Q4 ENGINEERING, MARINE
M. Spicknall
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引用次数: 0

Abstract

The potential impact of a ship’s outfit density on the labor hours required for production, sustainment, and upgrade has been discussed within the domain of warship design for decades. For fixed ship mission, systems capabilities, crew size, specification complexity and maturity, other producibility characteristics, and work schedule, as a ship’s size varies, required production labor hours are impacted in two ways—first by a change in work content and second by a change in worker productivity with available space. Because these impacts are inversely related, there exists an optimum ship size and outfit density that minimizes required labor hours. This paper describes an analysis of optimum outfit density to minimize production labor hours for complex modern surface combatants. The key relationship between available space and worker productivity is defined based on data from multiple industries. This relationship is then used along with knowledge of surface combatant design and shipbuilding processes and production labor requirements to identify an optimum range of overall outfit density to target during ship design. This derived optimum range is validated with other related research and reference to the outfit densities of existing modern surface combatants and what is known about their ease of build. Also discussed are 1) alternative ship design and production paradigms that might allow for ships with higher outfit densities while maintaining efficient production, maintenance, and upgrade and 2) implications of the relationship between available worker space and worker productivity for shipyard planning and work execution.
基于工作内容和劳动力密度及生产率随船舶尺寸变化的分析,推导出水面战舰的最佳装备密度
几十年来,军舰设计领域一直在讨论舰艇装备密度对生产、维护和升级所需工时的潜在影响。对于固定的舰船任务、系统能力、船员规模、规格复杂性和成熟度、其他可生产性特征以及工作进度,随着舰船规模的变化,所需的生产工时会受到两方面的影响--首先是工作内容的变化,其次是可用空间内工人生产率的变化。由于这些影响成反比关系,因此存在一个能使所需劳动时间最小化的最佳船舶尺寸和装备密度。本文介绍了对最佳装备密度的分析,以最大限度地减少复杂的现代水面战斗舰艇的生产工时。根据多个行业的数据,定义了可用空间与工人生产率之间的关键关系。然后将这种关系与水面战斗舰艇设计和造船工艺以及生产劳动要求的知识结合起来,确定了在舰艇设计过程中应瞄准的总体装备密度的最佳范围。通过其他相关研究和参考现有现代水面战斗舰的装备密度以及对其建造难易程度的了解,对得出的最佳范围进行了验证。此外还讨论了:1)在保持高效生产、维护和升级的同时,可能允许船舶具有更高的装备密度的其他船舶设计和生产范例;2)可用工人空间和工人生产率之间的关系对船厂规划和工作执行的影响。
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来源期刊
CiteScore
1.10
自引率
0.00%
发文量
19
期刊介绍: Original and timely technical papers addressing problems of shipyard techniques and production of merchant and naval ships appear in this quarterly publication. Since its inception, the Journal of Ship Production and Design (formerly the Journal of Ship Production) has been a forum for peer-reviewed, professionally edited papers from academic and industry sources. As such it has influenced the worldwide development of ship production engineering as a fully qualified professional discipline. The expanded scope seeks papers in additional areas, specifically ship design, including design for production, plus other marine technology topics, such as ship operations, shipping economics, and safety. Each issue contains a well-rounded selection of technical papers relevant to marine professionals.
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