Evaluation of Current and Future Crew Sizes and Compositions – Two RCN Case Studies


  1. Chow, R.
  2. Lamb, M.
  3. Charest, G.
  4. Labbé, D.
Corporate Authors
Defence Research and Development Canada, Toronto Research Centre , Toronto ON (CAN)
The Royal Canadian Navy (RCN) is evaluating crew size and composition of existing and future ships in an effort to balance operational capabilities and life cycle costs. Defence R&D Canada developed the Simulation for Crew Optimization and Risk Evaluation (SCORE) tool to provide the RCN with whole-ship modeling for crews in the absence of detailed system data. SCORE has been used in two crew validation case studies. The first study compared a Canadian Patrol Frigate (CPF) crew of 217 with a crew of 200 over a ten-day high-tempo operation scenario. SCORE analysis revealed that the crew of 217 gained about 137 hours of force generation or maintenance capacity per scenario-day across the Combat, Deck, Marine Systems Engineering, and Combat Systems Engineering departments. The second study examined eight Arctic/Offshore Patrol Ship (AOPS) crewing options ranging from 45 to 65 people using a seven-day high-tempo scenario. The SCORE analysis revealed the ship’s limitations with a crew smaller than 65 and aided in the RCN’s decision to endorse an AOPS crew of 65. These case studies show that SCORE provides a viable alternative to detailed task network simulations for crew validation and recommend the inclusion of stochastic modelling and human performance considerations in future versions.
Report Number
DRDC-RDDC-2016-P161 — External Literature
Date of publication
04 May 2017
Number of Pages
Electronic Document(PDF)

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