Peace-time attrition expectations for naval fleets – An analysis of post-WWII maritime incidents


  1. Mason, D.W.
Corporate Authors
Defence Research and Development Canada, Centre for Operational Research and Analysis, Ottawa ON (CAN)
This report presents a database of service life-threatening accidents/incidents involving the fighting ships from five navies—Canada, United Kingdom, United States, Australia, and New Zealand—since the end of the Second World War. The research identified 1,222 ships in these navies, including aircraft carriers, cruisers, destroyers, frigates, submarines, littoral ships, and replenishment oilers, which have delivered (to May 2017) a combined 28,985 years of service. The accidents/incidents research employed only open literature sources and identified 1,254 incidents. Each was categorized (a taxonomy of 17 incident types was employed), and the service time lost due to the incident was either calculated from established facts or estimated by the author based on known comparable incidents. The report also presents a summary analysis of the peacetime-only incidents, including a breakdown by incident type, ship category, and decade of occurrence. The full database is appended to the report in digital form. The intent of this research is to provide maritime force structure planners with data for statistical underpinnings in support of fleet sizing decisions.

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Navy accidents;attrition;fleet sizing
Report Number
DRDC-RDDC-2017-D086 — Reference Document
Date of publication
01 May 2018
Number of Pages
Electronic Document(PDF);CD ROM

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