orcaflex-operability

name	orcaflex-operability
description	Perform operability analysis combining multiple sea states to assess system availability and weather downtime. Generate operability envelopes, critical heading analysis, and downtime calculations from wave scatter diagrams.
type	reference
version	1.0.0
updated	"2026-01-17T00:00:00.000Z"
category	engineering
triggers	["operability analysis","weather downtime","operability envelope","sea state analysis","weather window","operational limits","critical headings","wave scatter","annual downtime"]
capabilities	[]
requires	[]
tags	[]
scripts_exempt	true

Orcaflex Operability

When to Use

• Operability envelope generation for mooring systems
• Weather downtime calculations from scatter diagrams
• Critical heading identification for design loads
• Multi-sea-state analysis (1yr, 10yr, 100yr return periods)
• Tension limit assessment (intact vs damaged conditions)
• Annual operational availability studies
• Polar coordinate visualization of system limits

Prerequisites

• OrcaFlex simulation results (.sim files) for multiple headings
• Wave scatter diagram (Hs-Tp probability matrix)
• Python environment with digitalmodel package installed
• Tension limits for intact and damaged conditions

Python API

Basic Operability Analysis

from digitalmodel.orcaflex.operability_analysis import OperabilityAnalyzer

# Initialize analyzer
analyzer = OperabilityAnalyzer(
    simulation_directory="results/.sim/",
    output_directory="reports/operability/"
)

# Generate operability envelope

*See sub-skills for full details.*
### Weather Downtime Calculation

```python
from digitalmodel.orcaflex.operability_analysis import OperabilityAnalyzer
import pandas as pd

analyzer = OperabilityAnalyzer(
    simulation_directory="results/.sim/",
    output_directory="reports/"
)

# Load wave scatter diagram

*See sub-skills for full details.*
### Critical Headings Analysis

```python
from digitalmodel.orcaflex.operability_analysis import OperabilityAnalyzer

analyzer = OperabilityAnalyzer(
    simulation_directory="results/.sim/",
    output_directory="reports/"
)

# Identify critical headings
critical = analyzer.generate_critical_headings_report(

*See sub-skills for full details.*
### Comprehensive Report Generation

```python
 digitalmodel.orcaflex.operability_analysis  OperabilityAnalyzer

analyzer = OperabilityAnalyzer(
    simulation_directory=,
    output_directory=
)


report_path = analyzer.generate_comprehensive_report(

*See sub-skills  full details.*



- [orcaflex-modeling](../orcaflex-modeling/SKILL.md) - Run OrcaFlex simulations
- [orcaflex-post-processing](../orcaflex-post-processing/SKILL.md) - Extract results
- [orcaflex-extreme-analysis](../orcaflex-extreme-analysis/SKILL.md) - Extreme value extraction
- [mooring-design](../mooring-design/SKILL.md) - Mooring system design



- API RP 2SK: Design  Analysis of Stationkeeping Systems
- DNV-OS-E301: Position Mooring
- ISO -: Stationkeeping Systems
- Source: `src/digitalmodel/modules/orcaflex/operability_analysis.py`



- [Basic Operability Configuration (+)](basic-operability-configuration/SKILL.md)
- [Simulation Setup (+)](simulation-setup/SKILL.md)



- [Error Handling](error-handling/SKILL.md)



- [Version Metadata](version-metadata/SKILL.md)
- [[] - -01-](--01-/SKILL.md)
- [Operability Workflow](operability-workflow/SKILL.md)
- [Operability Envelope Plot (+)](operability-envelope-plot/SKILL.md)
- [CSV Matrix Format](csv-matrix-/SKILL.md)
- [With OrcaFlex Modeling (+)](-orcaflex-modeling/SKILL.md)