Ship Universe Naval Tool
Naval Shipyard Workforce, Man-Day & Maintenance Throughput Tool
Estimate maintenance work-package duration, productive man-days, trade bottlenecks, straight-time and overtime labor cost, targeted workforce required to hit a schedule, annual shipyard throughput, dock capacity constraints and backlog clearance. Advanced mode models individual trades and partial overlap between work streams.
Currency selector changes display only. No exchange-rate conversion is performed.
Workforce
Workers per shift, utilization, overtime and rework allowance
Schedule
Productive man-hours, trade overlap, bottlenecks and target-date staffing
Throughput
Workforce capacity, dock capacity, incoming demand and backlog clearance
Maintenance Work Package
Use productive maintenance man-hours before rework. The model converts the work package into schedule days using entered workforce, utilization and overtime assumptions.
man-hours
workers
%
Productive work time as a share of paid straight-time hours.
$
/paid hour
%
workdays
Examples include cure, test, inspection, access or other
schedule time not shortened by adding labor.
workdays
$
/day
Shift & Overtime Assumptions
shifts/day
hours
days
hours/week
% of normal
%
Annual Maintenance Throughput
days/year
ships/year
ship packages
berths
days/package
days/year
Trade Workforce & Work Package
Each row represents one trade or work stream. Required man-hours are productive hours before the global rework allowance. Workers are entered per active shift.
| Trade / Work Stream | Workers/Shift | Base Man-Hours | Util. % | Labor Rate/Hr |
|---|
Schedule & Labor Assumptions
shifts/day
hours
days
hours/week
% of normal
%
%
%
0% treats trade durations as sequential. 100% treats them as
fully concurrent, leaving the longest trade on the labor critical path.
workdays
workdays
$
/day
Annual Yard Capacity & Backlog
days/year
ships/year
ship packages
berths
days/package
days/year
Workforce & Throughput Results
Blended workforce analysis
Enter work-package data
Enter productive man-hours and workforce assumptions to estimate
maintenance duration, man-days, labor cost and annual shipyard throughput.
Modeled Completion Time
N/A
Labor phase plus entered non-labor critical-path time
Annual Maintenance Throughput
N/A
Lower of workforce-limited and berth-limited capacity
Base Productive Man-Hours
N/A
Effective Man-Hours incl. Rework
N/A
Productive Man-Days
N/A
Bottleneck Trade
N/A
Direct Labor Cost
N/A
Overtime Share
N/A
Availability-Day Exposure
N/A
Target Schedule Gap
N/A
Added Workers to Target
N/A
Workforce-Limited Capacity
N/A
Berth-Limited Capacity
N/A
Backlog Clearance
N/A
Trade Capacity & Schedule
Advanced mode
| Trade | Workers/Shift | Eff. Man-Hours | Prod. Hours/Day | Trade Duration | Annual Capacity | Labor Cost |
|---|
Schedule & Workforce Summary
Target-Date Workforce Plan
Annual Throughput & Backlog
Trade Duration Concentration
Completion-Time Sensitivity
Workforce vs rework
| Workforce \ Rework | -5 pts | Base | +5 pts |
|---|
Model approach:
effective work-package man-hours equal base productive man-hours
plus the entered rework/growth allowance. Daily productive capacity
equals straight-time paid hours × utilization plus overtime paid
hours × utilization × overtime productivity factor. In Advanced
mode, labor-phase duration interpolates between fully sequential
trade durations and full trade overlap using the entered overlap
factor. Annual workforce throughput is limited by the trade with
the lowest annual ship-equivalent capacity. Final annual throughput
is the lower of workforce capacity and entered berth capacity.
Planning estimate only.
Actual naval maintenance schedules depend on work-package maturity,
emergent work, availability of material and technical data,
certification, QA, testing, access, interference between trades,
compartment congestion, security restrictions, shift staffing,
learning curves, subcontractors, tooling, crane and shop capacity,
dock availability, weather, government-furnished equipment and
ship-specific conditions. The trade-overlap factor is a
schedule-screening approximation and does not replace CPM scheduling,
resource-loaded planning or production-control systems. Productive
man-days are shown as eight productive hours per man-day for comparison
only. Labor cost represents modeled direct paid labor and does not
include employer burden, benefits, materials, subcontracting, overhead
or other shipyard costs unless incorporated into the entered hourly
rate. Do not use this tool as the sole basis for contractual schedules,
workforce commitments or fleet-readiness decisions.
Generated by ShipUniverse.com
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