Marine, Shipbuilding & Boat Manufacturing worked example

Shipyard Bay Capacity at 98% bay utilization rate: a worked example

This scenario runs the shipyard bay capacity calculation on the strong side: 98% bay utilization rate, with every other input held at its documented default. Use it to determine if existing facility bays can support the order book, justify capital investment in additional bays, or evaluate production schedule feasibility.

The inputs for this scenario

  • Number of production bays: 4 bays (unchanged)
  • Average build cycle time: 12 weeks / vessel (unchanged)
  • Bay utilization rate: 98 % (raised for this scenario; the documented default is 85)

Working through the calculation

  • Applying the documented formula (Available bay-weeks per year = bays x 52 weeks x utilization rate / 100) to the inputs above produces each figure below.
  • At this operating point the engine returns 0.33 vessels / yr for effective throughput, the number this scenario is built around.
  • At this operating point the engine returns 0.33 vessels / yr for raw throughput.
  • At this operating point the engine returns 98 % for efficiency.
  • At this operating point the engine returns 12 hr for runtime.

How this compares with the baseline

  • Against the tool's baseline example, where bay utilization rate sits at 85% and the headline result is 0.28 vessels / yr, this scenario comes in 15.29% above the baseline at 0.33 vessels / yr.
  • Use it for capacity planning, evaluating a bay expansion, or checking whether a sales forecast is physically buildable. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • Effective throughput: 0.33 vessels / yr (headline result)
  • Raw throughput: 0.33 vessels / yr
  • Efficiency: 98 %
  • Runtime: 12 hr

Run it with your numbers

  • Every input above is editable in the live Shipyard Bay Capacity calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.